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Republic of the Philippines, Department of Education, National Capital Region, , DIVISION OF CITY SCHOOLS – MANILA, Manila Education Center Arroceros Forest Park, Antonio J. Villegas St. Ermita, Manila, , Applied Economics, Implications of Market, Pricing in Making Economic, Decisions, , https://www.thoughtco.com/supply-and-demand-practice-questions-1146966, , Quarter 1 Week 4 Module 4, Learning Competency, Determine the implications of market, pricing in making economic decisions, , 1

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HOW TO USE THIS MODULE, Before starting the module, I want you to set aside other, task/s that may disturb you while enjoying the lessons. Read, the simple instructions below to successfully enjoy the, objectives of this kit. Have fun!, Follow carefully all the contents and instructions, indicated in every page of this module., Write on your notebook the concepts about the, lessons. Writing enhances learning that is, important to develop and keep in mind., Perform all the provided activities in the module., Let your facilitator/guardian assess your answers, using the answer key card., Analyze conceptually the posttest and apply what, you have learned., Enjoy studying!, , PARTS OF THE MODULE, , , , , Expectations - These are what you will be able to know after, completing the lessons in the module., Pre-test - This will measure your prior knowledge and the, concepts to be mastered throughout the lesson., , , , Looking Back to your Lesson - This section will measure what, learnings and skills did you understand from the previous lesson., Brief Introduction- This section will give you an overview of the, lesson., , , , Activities - This is a set of activities you will perform with a, partner., , , , , Remember - This section summarizes the concepts and, applications of the lessons., Check your Understanding - It will verify how you learned from, the lesson., , , , Post-test - This will measure how much you have learned from, the entire module, , 2

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LESSON, 4, , Implications of Market Pricing in, Making Economic Decisions, EXPECTATIONS, , Specifically, this module will help you to:, , 1. determine the implications of market pricing in making economic, decisions, 2. explore the elasticity of demand and supply, 3. solve problems on price elasticity of demand and supply, 4. value the implications of market pricing in decision making, , PRE-TEST, , Are you excited to to learn new sets of knowledge? Let us check your, knowledge about the topic. Have fun learning!, Part I. Graph Analysis, Directions: Please analyse the graph and answer the questions below. Write, your answer on the space/s provided for each question., When do you have a, surplus in the supply of, product?, , When do you have a, shortage in the, supply of product?, , 1)____________________, ____________________, , 2)____________________, ____________________, , https://study.com/academy/lesson/characteristics-of-the-price-system-in-a-market-economy.html, , 3. Using the chart above, kindly describe the point where there is a, a) surplus ____________________________________, b) shortage ___________________________________, c) equilibrium in price _________________________, 4. What is surplus, shortage and equilibrium price? Define the terms., Surplus______________________________________________________________, Shortage_____________________________________________________________, Equilibrium price_____________________________________________________, 3

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Part II. Multiple Choice Questions, Directions: Please read the statements carefully. Encircle the correct answer., 1. In the market, the price elasticity for the demand of canned goods sold by, Aling Puring Grocery Store is the:, a) ratio of the percentage change in quantity demanded for the goods to the, percentage change in its price, b) responsiveness of revenue to a change in quantity of the canned goods, c) ratio of the change in quantity demanded divided by the, change in its price of the canned goods, d) response of revenue to a change in the price, 2. If demand for sacks of rice in Aling Puring Grocery Store is price elastic, then a:, a) rise in the price of sacks of rice will raise total revenue of the grocery, b) fall in the price of sacks of rice will raise total revenue of the store, c) fall in the price of sacks of rice will lower the quantity demanded, d) fise in the price of sacks of rice won't have any effect on total revenues, 3. If the cross-price elasticity between soap bar and liquid soap commodities is 1.5,, a) the two goods are luxury goods, b) the two goods are complements, c) the two goods are substitutes, d) the two goods are normal goods, 4. The price elasticity of demand for a certain good tends to be:, a) smaller in the long run than in the short run, b) smaller in the short run than in the long run, c) larger in the short run than in the long run, d) unrelated to the length of time, 5. If the price elasticity of supply of cup noodles is 0.60 and the price increase by, 3 percent, then the quantity supplied for cup noodles increases by how by?, a) 0.60 percent., b) 0.20 percent, c) 1.8 percent, d) 18 percent, , Show me your solution here, , https://global.oup.com/us/companion.websites/9780199811786/student/chapt2/multiplechoice/, , Great job! You finished answering the questions. You may now request your, facilitator to check your work. Congratulations and keep on learning!, 4

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LOOKING BACK TO YOUR LESSON, As we go further, let us try to recall the concepts of market demand,, market supply and market equilibrium. Please perform this., PART I. TRUE OR FALSE, Directions: Write TRUE if the statement is correct and FALSE if tincorrect., Write your answer on the space provided for each number., 1., , _______The equilibrium point is the level where the demand and supply, , curves intersect., 2., , _______If the price is above the equilibrium level, the quantity, , demanded is greater than the quantity supplied., 3., , _______If the price is below the equilibrium point, the quantity, , demanded is lesser than the quantity supplied., 4., , ________The law of demand applies during online sales of computers, , when consumers rush to buy products at 30% discounts., 5., , The law of supply applies when the producers supply more masks at a, , higher price; selling at higher quantity at a higher price increases revenue., 6., , __________If the price is below the equilibrium level, then the quantity, , demanded will exceed the quantity supplied., , 7., , __________Shortage will exist if the price is below the equilibrium point, , 8., , __________The law of supply and demand explains the interaction between, , the sellers of a product and the buyers., , 9., , ___________The demand curve is always downward sloping due to the law of, , diminishing marginal utility., , 10., , __________The supply curve shows an upward slope., , PART II Make Meaning Internet Assisted Activity, Directions: Give the meaning of the following words/phrases. You may use, the internet to substantiate your ideas., Price Elasticity__________________________________________________________, Price Elasticity of Demand_______________________________________________, Price Elasticity of Supply________________________________________________, , 5

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BRIEF INTRODUCTION, , Market Pricing on Making Economic Decisions, Please read this article on Demand, Supply and Elasticity of Clean Water in, the Philippines. This will help you understand better our new lesson. Enjoy, reading!, Demand, Supply and Elasticity of Clean Water in the Philippines, 8/27/2015, According to an article created by Vice News, there are 55, people who die in the Philippines every day because of the, lack of clean water. As one can see clean water is greatly, needed by all people. As a student who is lucky to be given, all the necessities needed in life it would be normal not to, think of this because we normally do not notice it. However,, we need to. According to Katrina Arianne Ebora, who works, for UNICEF’s Water, Sanitation and Hygiene program in the, Philippines stated that “Over 30 million people in the, Philippines do not have access to improved sanitation, facilities.” Also, according to the PIS by 2050 the population, of the areas with poverty in Manila will reach over 9 million!, With the rising population of the Philippines there will be a, problem with the economy of clean water because there will, be too much demand for the supply of water. ., , https://redmonteconomics.weebly.com/blog/demand-supply-and-elasticity-of-clean-water-in-the-philippines, , The Marketing Price System, Last module, we talked about the market demand, market supply and, market equilibrium. In our new topic, we will link more of these variables to, the market price system. For example, in the article above, the causes and, effects of the water shortage around the Philippines could be best explained if, we could understand the concepts of demand and supply elasticity of the, clean water., A shortage is when there is an excess demand for the quantity, supplied. While surplus is excess in supply., For example, if there are 10 bottles of water and there are 20 students who, want drinking these, then there will be only 10 students whose demands are met, while the others will not be able to be given anything. There is shortage in the, supply., If producers make too many bottles of water and consumers cannot by them, want to buy them, there will be surplus., , Price System in a Market Economy, Let us find out more about the price system. We have learned that, demand is the willingness of the consumers to buy goods and services. In, economics, the willingness to buy goods and services should be, accompanied by the ability to buy, also called the “purchasing power”. This, is referred to as an effective demand (source: Investopedia)., 6

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EQUILIBRIUM, , CHARACTERISTICS, , Equilibrium is a point of balance or, a point of rest. It is also called, “market-clearing price”., , The supply and demand are, balanced in equilibrium., , Equilibrium price is the price at, which the producer can sell all the, units he wants to produce and the, buyer can buy all the units he wants, , The economic forces are balanced, and in the absence of external, influences, the (equilibrium) values, of economic variables will not, change., , Quantity demanded and quantities, supplied are equal., , The amount of goods or services, sought by buyers is equal to the, amount of goods or services, produced by sellers., , Are you enjoying the lesson? Let us proceed to the next topic., Price System in a Market Economy: Its Characteristics, , Let us learn more! The prices of goods that we encounter, everyday to the things we buy plays a crucial role in determining an, efficient distribution of resources in a market system. The prices will, help us to make every day economic decisions about our needs and desires., They are the indications of the acceptance of a product; the more popular, the product, the higher the price that can be charged., Example is when a tables are for sale in your community today and is, assumed that they are not very important as compared to other products or, commodities that we need to survive especially that aour movements are very, limited., Neither the producers, nor consumers can impact, Price acts as a signal for shortages and, prices; consumers can buy surpluses which help firms and consumers, whatever they want; nor can respond to changing market conditions., producers make and sell, whatever they want,  If a good is in shortage – price will tend to rise., Rising prices discourage demand, and, Prices are decided by, encourage firms to try and increase supply., interactions, between, the, producers and the consumers.,  If a good is in surplus – price will tend to fall., Falling price encourage people to buy, and, cause firms to try and cut back on supply., , , Prices help to redistribute resources from, goods with little demand to goods and services, , 7

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We explore more how equilibrium happens., The market price is Let us analyze the chart below., the point that the supply, and, demand, curves, The chart shows a surplus – the quantity is, greater, than demand. When quantity is greater, intersect. (Judge, S. 2020), than demand it causes prices to go down., , Figure 1., The Equilibrium Point or the, Market Price Point, Figure 2. Surplus Point, https://study.com/academy/lesson/characteristics-of-the-price-system-in-a-market-economy.html, , PRICES ARE MARKET DRIVEN, The producers can make what they, want and consumers are free to purchase, what they want. This means that customers, live in a market economy. When prices are, high, supply increases as many firms join the, market (Judge, S. 2020)., Let’s say the units of cellular phones. The, numbers of suppliers have increased because, of high prices of the cellular phones. When, smartphones were new in the market, there, were fewer producers and prices were high., The high prices attracted the producers, to join the market (Judge, S. 2020)., , https://study.com/academy/lesson/characteristics-of-the-pricesystem-in-a-market-economy.html, , https://www.economicsonline.co.uk/Competitive_markets/Price_elasticity_of_dem, and.html, , Figure 3. Shortage Point, In shortage, quantity is less, than the demand; it causes prices to, go up due to scarcity, , Example of which is the shortage in, masks and ethyl alcohol in the market., There is shortage in the supply, thus,, price tends to go up or tends to go, higher (Judge, S. 2020)., , Law of Supply and Demand, The law of supply and demand explains the interaction between the, sellers of a product and the buyers. It shows the relationship between the, availability of a particular product and the desire (or demand) for that product, , has on its price., 8

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The Law of Demand, Again, what is a demand? We said last, time that it is the desire of a consumer to, purchase goods or services and willingness to, pay a at for that product or services at a given, price., If all other factors remain equal, the higher, the price of a good, the fewer people will, demand that good., , The demand curve is always, downward sloping due to the, law of diminishing marginal, utility., , “the higher the price, the lower the quantity, demanded” and vice versa. (source: Investopedia), https://www.ducksters.com/money/supply_and_demand.php, , The Law of Supply, The law of supply demonstrates the, quantities that will be sold at a given, price. The higher the price, the higher, The quantity supplied and, vice versa., , The law of supply says ………………., “as the price of a product increases,, companies will produce more of the, Product”., When graphing the supply vs. the price, ,, the slope rises., , https://www.ducksters.com/money/supply_and_demand.php, , How Do Supply and Demand Create an Equilibrium Price?, Equilibrium price is the price at which a, producer can sell all the units he wants to produce and, a buyer can buy all the units he wants., Supply and demand are balanced, or in equilibrium, The demand curve is downward sloping. This, is due to the law of diminishing marginal utility., The supply curve is a vertical line; overtime, supply curve slopes, upward; the more suppliers expect t to charge higher, the more they will be willing, to produce and bring products to market., In the Equilibrium point, the two slopes will intersect. The market price, is sufficient to induce suppliers to bring to market that same quantity of goods that, consumers will be willing to pay for at that price., https://www.investopedia.com/terms/l/law-of-supply-demand.asp, https://www.thoughtco.com/calculating-economic-equilibrium-1147698, https://www.ducksters.com/money/supply_and_demand.php, , 9

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PRICE ELASTICITY OF DEMAND AND SUPPLY, Can you guess what happened with this mom in a market?, You may write your reaction in the shape towards her., Price elasticity measures the responsiveness of the, quantity demanded or supplied of a good to a change in its, price. Elasticity can be described as: a) elastic or very, responsive and b) unit elastic, or inelastic or not very, responsive. (source: Investopedia), , Effects of Change in Demand and Supply, Elastic demand or supply curve indicates that quantity, demanded or supplied respond to price changes in a greater, than proportional manner., Inelastic demand or supply curve is one where a, given percentage change in price will cause a smaller, percentage change in quantity demanded or supplied., Unitary elasticity means that a given percentage changes in price leads to, an equal percentage change in quantity demanded or supplied., , CATEGORIES OF PRICE ELASTICITY, According to Agarwal, P. (2018) and Judge, S. (2020), there are four categories, of price elasticity are the following:, I. The Price Elasticity of Demand, Price elasticity of demand is the responsiveness of quantity demanded, or, how much quantity demanded changes, given a change in the price of goods or, services., *The mathematical value is negative. A negative value indicates an, inverse relationship between price and the quantity demanded. But the negative, sign is ignored (Judge, S. 2020)., Price Elasticity of Demand (PED)= % change in quantity demanded % Change, in price, , https://www.economicsonline.co.uk/Competitive_markets/Price_elasticity_of_demand.html, , Figure 4 Price Elasticity of Demand, , 10

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a) Elastic Demand (PED > 1) - the percentage change in price brings about, a more than proportionate change in quantity demanded., When the percentage change in quantity demanded is greater than the, percentage change in price, and the coefficient of the elasticity is greater than 1., Example real estate- housing - There are many different housing choices. People, may live in a townhouses, condos, apartments, or resorts. The options make easy, for people to not pay more than they demand., b) Inelastic Demand (coefficient of the elasticity is less than 1) – is when, an increase in price causes a smaller % fall in demand., When the percentage change in quantity demanded is less than the percentage, change in price, and the coefficient of the elasticity is less than 1., Example Gasoline – gasoline has few alternatives; people with cars consider it as a, necessity and they need to buy gasoline. There are weak substitutes, such as train, riding, walking and buses. If the price of gasoline goes up, demand is very inelastic., Other Examples: Diamonds, aircon, Iphone, Cigarettes, c) Unitary Elastic Demand - When the percentage change in demand is, equal to the percentage change in price, the product is said to have, Unitary Elastic demand., Unitary elastic - PED or the price elasticity of demand is 1, d) Perfectly Elastic - a small percentage change in price brings about a, change in quantity demanded from zero to infinity., , Perfectly elastic - the coefficient of elasticity is equal to infinity (∞), , e) Perfectly Inelastic - the PED is =0 any change in price will not have, any effect on the demand of the product., Perfectly inelastic - the percentage change in demand will be equal to zero (0), , POINT ELASTICITY, a), , The midpoint elasticity is less than 1. (Ed < 1). Price reduction leads, to reduction in the total revenue of the firm., b) The demand curve is linear (straight line), it has a unitary elasticity at, the midpoint. The total revenue is maximum at this point., c) Any point above the midpoint has elasticity greater than 1, (Ed > 1)., , II. The Income Elasticity of Demand (YED), The income elasticity of demand is the relationship between changes in, quantity demanded for a good and a change in real income., 11

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• YED = % 𝑐ℎ𝑎𝑛𝑔𝑒 𝑖𝑛 𝑑𝑒𝑚𝑎𝑛𝑑 % 𝑐ℎ𝑎𝑛𝑔𝑒 𝑖𝑛 𝑖𝑛𝑐𝑜𝑚𝑒, Normal Goods – are those goods for which the demand rises as consumer income, rises; positive income elasticity of demand so as consumers’ income rises more is, demanded at each price. These goods shift to the right as income rises., YED is positive. As income rises, the proportion spent on cheap goods will reduce, as now they can afford to buy more expensive goods., Example (the demand for units of air-conditioning increases as the income of the, consumer increases and the demand for electric fan decreases), Normal good: units of air-conditioning; Inferior good: electric fan, The Inferior Goods – the demand decreases when consumer income rises; demand, increases when consumer income decreases), ---------- Shifts to the left as income rises. YED is negative. • As income rises, the, proportion spent on cheap goods will reduce as now they can afford to buy more, expensive goods. Examples: the demand for cheap/generic electronic goods, (let say electric fans) will fall as people income rises and they will switch to, expensive branded electronic goods (unit of air-conditioning), , III. Cross Price Elasticity of Demand or (XED), Cross price elasticity of dmand is he effect on the change in demand of one, good as a result of a change in price of related to another product., • XED = % 𝑐ℎ𝑎𝑛𝑔𝑒 𝑖𝑛 𝑞𝑢𝑎𝑛𝑡𝑖𝑡𝑦 𝑑𝑒𝑚𝑎𝑛𝑑𝑒𝑑 𝑜𝑓 𝑔𝑜𝑜𝑑 𝑋 % 𝐶ℎ𝑎𝑛𝑔𝑒 𝑖𝑛 𝑝𝑟𝑖𝑐𝑒 𝑜𝑓 𝑔𝑜𝑜𝑑 𝑌 • • If, the value of XED is positive - substitute goods, • If the value of XED is negative – complements goods, • If the value of XED is zero - two goods are unrelated, , IV. Price Elasticity of Supply (PES), • The measure of the responsiveness of quantity to a change in price. It is, the percentage change in supply as compared to the percentage change in price of, a commodity., PES = % 𝑐ℎ𝑎𝑛𝑔𝑒 𝑖𝑛 𝑞𝑢𝑎𝑛𝑡𝑖𝑡𝑦 𝑆𝑢𝑝𝑝𝑙𝑖𝑒𝑑 % 𝑐ℎ𝑎𝑛𝑔𝑒 𝑖𝑛 𝑃𝑟𝑖𝑐𝑒, If supply is elastic, producers can increase, output without a rise in cost or a time, delay. If supply is inelastic, firms find it, hard to change production in a given time, , period., , https://www.intelligenteconomist.com/price-elasticity-, , of-supply, , PES = % 𝑐ℎ𝑎𝑛𝑔𝑒, If Pes > 1, Pes = 0, Pes = infinity, Pes < 1, , 𝑖𝑛 𝑞𝑢𝑎𝑛𝑡𝑖𝑡𝑦 𝑆𝑢𝑝𝑝𝑙𝑖𝑒𝑑 % 𝑐ℎ𝑎𝑛𝑔𝑒 𝑖𝑛 𝑃𝑟𝑖𝑐𝑒, = supply is price elastic, = supply is perfectly inelastic, = supply is perfectly elastic, = supply is price inelastic, 12

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PRICE ELASTICITY OF SUPPLY, , ELASTIC SUPPLY, , INELASTIC SUPPLY, , Perfectly Inelastic Supply, , Perfectly Inelastic Supply, , https://www.intelligenteconomist.com/price-elasticity-of-supply, , Determinants of Price Elasticity of Supply, Agarwal, P. (2020) said, price elasticity of supply can be influenced by the, following factors:, 1. Marginal Cost- If the cost of producing one more unit keeps rising as output, rises or marginal cost rises rapidly with an increase in output, the rate of output, production will be limited. The Price Elasticity of Supply will be inelastic - the, percentage of quantity supplied changes less than the change in price. If Marginal, Cost rises slowly, supply will be elastic., 2. Time - Over time price elasticity of supply tends to become more elastic. The, producers would increase the quantity supplied by a larger percentage than an, increase in price., 3. Number of Firms - The larger the number of firms, the more likely the supply is, elastic. The firms can jump in to fill in the void in supply., 4. Mobility of Factors of Production- If factors of production are movable, the, price elasticity of supply tends to be more elastic. The labor and other inputs can, be brought in from other location to increase the capacity quickly., 5. Capacity - If firms have spare capacity, the price elasticity of supply is elastic., The firm can increase output without experiencing an increase in costs, and, quickly with a change in price., 13

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ACTIVITIES, Part I. Problem Solving and Critical Thinking Analysis, Directions:, Please analyse the problems carefully. Answer the problems and, present your solutions. Inerpret the results., 1) If there are 10 bottles of water and there are 20 students who want to, drink these bottles of water, there will be only 10 students whose, demands are met while the others will not., Analysis: We can conclude that there is _____________________ in the, supply., 2. If price of canned good in the grocery store increases by 8% and the, quantity demanded decreases by 12%, what is price elasticity of, demand? Is it elastic, inelastic or unitary elastic?, Solution:, , Interpretation: This means it is ____________________________________, 3. If a 4% increase in price of 1 pack of bread leads to an increase in the, quantity supplied of 8% describe the price elasticity., Solution:, , Analysis of Price elasticity: ________________________________________, Part II. Solving Problem on Price Elasticity, Directions: Analyze each problem carefully. Answer the questions below., 1. Suppose the price of ethyl alcohol rises by 20 %. As a result, the demand, for substitute hand soap rises by 10 %., A) What is the cross-elasticity of demand for hand soap with respect to, the price of ethyl alcohol? Encircle your answer. Present your solution., A), , + 2 B) + 0.5, , C) - 0.5, , 14, , D) – 2

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Learning Module for Applied Economics, , B) Analysis on price elasticity _________________________________________, , C) Interpret your analysis on the kind of good__________________________, 2. If a 20% decrease in the price of international calls lead to a 35% increase, in the quantity of calls demanded, we can conclude that the demand for, phone calls is:, A) Solution:, , B) Analysis on price elasticity __________________________________, , REMEMBER, , , , , , , , , , , A demand curve shows the relationship between quantity demanded and, price in a given market on a graph., The law of demand states that a higher price typically leads to a lower, quantity demanded., A supply curve shows the relationship between quantity supplied and price, on a graph., The law of supply says that a higher price typically leads to a higher, quantity supplied., The equilibrium price and equilibrium quantity occur where the supply and, demand curves cross., The equilibrium occurs where the quantity demanded is equal to the, quantity supplied., If the price is below the equilibrium level, then the quantity demanded will, exceed the quantity supplied., Excess demand or a shortage will exist. If the price is above the equilibrium, level, then the quantity supplied will exceed the quantity demanded., Excess supply or a surplus will exist. In either case, economic pressures, will push the price toward the equilibrium level., 15

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Learning Module for Applied Economics, , CHECK YOUR UNDERSTANDING, Part I. Identification, Directions: Please read the sentences carefully. Identify the the word or phrase, that is appropriate to each item., 1. A ________________ shows the relationship between quantity demanded and, price in a given market on a graph., 2., The __________________________ states that, higher the price, the higher, the quantity supplied., 3. __________________means that a given percentage changes in price leads to, an equal percentage change in quantity demanded or supplied., 4., _______________means the effect on the change in demand of one good as, a result of a change in price of related to another product., 5., __________________ those goods for which the demand rises as consumer, income rises., 6., _______________the coefficient of the elasticity is less than 1; when an, increase in price causes a smaller % fall in demand., Part II. Enumeration on Price Elasticity of Goods, Directions: Please conduct a survey or observe the market in your vicinity. This, can make you aware of your environments. Give examples of goods considered, as elastic and inelastic. You may work with your parents and siblings., ELASTIC GOODS, , INELASTIC GOODS, , 1, 2, 3, 4, 5, , 1, 2, 3, 4, 5, , 16

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Learning Module for Applied Economics, , POST-TEST, , Name_______________________________Year/Section_______________Date______, Teacher____________________________School_________________________________, Part I True or False, Directions: Read the sentences carefully. Write TRUE if the statement is correct, and FALSE if the statement is incorrect., 1., Elasticity of demand refers to the change in demand when there is a, change in another factor such as price or income, 2., If demand for a good or service is static even when the price changes,, demand is said to be inelastic, 3., Examples of elastic goods include gasoline, while inelastic goods are, items like canned goods and vitamin c tablets, 4., The law of demand states that “elasticity shows how much a good or, service is demanded relative to its movement in price”., 5., Inelastic demand is when a demanded quantity for masks changes, by a greater percentage compared to its percentage change in price, 6., The opposite of a market economy is a planned economy, where, investment and production decisions are decided by the government., 7., Unit elastic is when a percentage change in demand equals the, price., 8., A mango fruit with an elastic demand gets more sales when its, price drops slightly. When its price goes up, it stays longer in the box., 9., The demand curve shows how quantity demanded for apple, responds to price changes. The flatter the curve, the more elastic is the, demand for an apple., 10., , The midpoint elasticity is greater than 1., , 17

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Learning Module for Applied Economics, , REFLECTIVE LEARNING SHEET, , HOW DO YOU RESPOND TO PRICE ELASTICITY ?, www.catholicmom.com, , People have unlimited needs and wants for their personal satisfaction and, because of that the prices of products easily get changed., Everyone is affected with the new normal in the market. The prices of, products have become very expensive since the outbreak of the pandemic, not, only in our locality, but in the whole world., If your income or the income of your family is not enough to purchase the, basic commodities needed by your family, what goods would you buy, instead?, What economic or marketing strategies would you apply? How would you respond, to the price changes of these commodities?, , ________________________________________________________________________, ________________________________________________________________________, ________________________________________________________________________, ________________________________________________________________________, ________________________________________________________________________, _______________________________________________, , E-SITES, , To further explore the concept learned today, and if it possible to connect the internet,, you may visit the following links:, https://www.youtube.com/watch?v=HHcblIxiAAk;, https://www.youtube.com/watch?v=nOlOf_KEnrw, , 18

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Learning Module for Applied Economics, , Name:_____________________Year/Section_______________Date________Score________, WORKSHEET (ADDITIONAL ACTIVITY), , Problem Solving and Critical Thinking Analysis, Directions: Solve the following problems. Interpret the results., 1. Christine sells banana banana turon for Php 4.00 per piece. She sells 50, pcs, and decides that she can charge more. She raises the price to, Php6.00 per piece and sells 40 pieces. What is the elasticity of demand for, her banana turon?, a) Solution:, , b) Interpret the result of the demand elasticity: ________________________, , 2. Joy Lima manages a Sweet Chocolate Bar Store. She charges P100 per, bar for her chocolate. You, the economist, have calculated the elasticity of, demand for the chocolate in her town to be 2.5. a) If she wants to increase, her total income or revenue, what advice will you give her and why?, b) What economic principle apllies? Explain your answer., ________________________________________________________________________, ________________________________________________________________________, ________________________________________________________________________, ________________________________________________________________________, ________________________________________________________________________, ________________________________________________________________________, ________________________________________________________________________, http://faculty.fortlewis.edu/walker_d/practice_problems_-_elasticity.htm, , 20

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Learning Module for Applied Economics, , ANSWER KEY, , PRETEST:, Part I. Graph Analysis, 1) Quantity supplied is greater than quantity demanded, 2) Quantity demanded is greater than quantity supplied, 3), a) Above the equilibrium point, b) Below the equilibrium point, c) The surplus and shortage points meet or intersect, 4) Oversupply/surplus – the quantity supplied is greater than the quantity demanded, Shortage/scarcity - the quantity supplied is less than quantity demanded, Equilibrium - the point where the demand and supply curves intersect., , Part II Multiple Choice, 1) A, 2) B, , 3) C, 4) B, , 5) C, , LOOKING BACK TO YOUR LESSON:, TRUE or FALSE, 1. TRUE, 2. TRUE, 3. FALSE, 4. TRUE, , 5., 6., 7., 8., , FALSE, TRUE, TRUE, TRUE, , 9. TRUE, 10. FALSE, , Part II Make meaning internet assisted activity, Price Elasticity – responsiveness of the market place to a change in price for a product, Price Elasticity of Demand – economic measure of the change in the quantity demanded or, purchased of product in relation to price changes, Price Elasticity of Supply- measures the responsiveness to the supply of goods or services after, a change in its market price (source: investopedia), , ACTIVITIES:, Part I, 1. Scarcity in the supply of bottled water, 2., , Solution: -12%/8% = -.12/.08 = ______________________, Answer -1.5., Again, drop the negative sign, so the elasticity is 1.5., Interpretation: Elastic (greater than 1), , 3. First compute the price elasticity of demand, which is the percentage change in, quantity demanded divided by the percentage change in price, Solution: price elasticity = 35%/ (-20%), Answer: price elasticity = -175, Interpretation: The price elasticity is larger than one in absolute value, demand, is elastic., 21

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Learning Module for Applied Economics, , Part II, 1. XED = % 𝑐ℎ𝑎𝑛𝑔𝑒 𝑖𝑛 𝑞𝑢𝑎𝑛𝑡𝑖𝑡𝑦 𝑑𝑒𝑚𝑎𝑛𝑑𝑒𝑑 𝑜𝑓 𝑔𝑜𝑜𝑑 𝑋 % 𝐶ℎ𝑎𝑛𝑔𝑒 𝑖𝑛 𝑝𝑟𝑖𝑐𝑒 𝑜𝑓 𝑔𝑜𝑜𝑑 𝑌 •, If the value of XED is positive - substitute goods, a) 20/10= 2, b) Positive, c) It’s a substitute good, 2. First compute the price elasticity of demand, which is the percentage change, in quantity demanded divided by the percentage change in price, a) Solution: price elasticity = 35%/ (-20%), Again, drop the negative sign, b) Answer: price elasticity = -1.75, c) Interpretation: Since the price elasticity is larger than one in absolute value,, demand is elastic., CHECK YOUR UNDERSTANDING, 1. Demand Curve, 2. The Law of Supply, 3. Unitary Elasticity, , 4. Cross Price Elasticity of Demand, 5. Normal Goods, 6. Inelastic Demand, , Part II. Price Elasticity of Goods, Elatic Goods, InElastic Goods, , POST TEST, Part I. TRUE OR FALSE, 1., 2, 3, 4, , TRUE, TRUE, FALSE, TRUE, , 5, 6, 7, 8, , FALSE, TRUE, TRUE, TRUE, , 9 TRUE, 10 FALSE, , WORKSHEET, 1., To find the elasticity of demand, we need to divide the percentage change in, quantity by the percentage change in price., a) Solution, % Change in Quantity = (40 - 50)/(50) = -0.20 = -20%, % Change in Price = (6.00 - 4.00)/(4.00) = 0.50 = 50%, Elasticity = |(-20%)/(50%)| = |-0.4| = 0.4, Answer: The elasticity of demand is 0.4, b) Elastic, 2., She should lower her price. Her price elasticity of demand for chocolate is, elastic (greater than one) and therefore, when she lowers her price she will sell a lot, more chocolate. The greater quantity sold will make up for her lower price,, increasing her total revenue. In other words, she is selling at a lower price but, making up for it in volume of sales ., http://faculty.fortlewis.edu/walker_d/practice_problems_-_elasticity.htm, , 22