Question 1 :
A sum was put at $S.I$ at a certain rate for $3$ years. Had it been put at $4$% higher rate, it would have fetched $Rs.\ 600$ more. Find the sum.

Question 2 :
Simple interest on a certain sum at a certain annual rate of interest is $\dfrac{1}{9}$. If the numbers representing rate percent and time in years be equal, then rate of interest is :

Question 3 :
Principal $= 2500$, rate $= 6$%, time$= 4$ years. Calculate the interest.

Question 4 :
A sum was put at simple interest at a certain rate for $10$ years. Had it been put at $1$% higher rate, it would have fetched Rs $1,000$ more. Find the <span>sum.</span>

Question 5 :
On what date will Rs.1,950 lent on $5^{th}$ January, 1991 amount to Rs.2,125.50 at 5 per cent per annum simple interest ?

Question 6 :
Ram, Karan and Rohan invested capital in the ratio of $2 : 3 : 4$ for time period of $6 : 4 : 3$ . Find the ratio of <span>profit distributed?</span>

Question 7 :
If SP of 8 pencils is equal to the CP of 9 pencils Then find gain % (or) loss %___

Question 8 :
A trader marked the price of his commodity so <span>as to include a profit of 25%. He allowed a discount of 16% on the MP. His actual profit was</span>

Question 9 :
Amina buys a book for $Rs.275$ and sells it at a loss of $15\%$.How much does she sell it for?

Question 10 :
If the cost price is $25\%$ of selling price, then find the profit percent.

Question 11 :
If goods be purchase for Rs.$380$ and $\dfrac {2}{3}$rd be sold at loss of 15%, at what gain percent should the remainder be sold so as to gain $10$% on the whole transaction

Question 12 :
When a plot is sold for $Rs. 18,700$, the owner loses $15$%. At what price must that plot be sold in order to gain $15$%?<br>

Question 14 :
What was the percentage of discount given?<br>I. $23.5$% profit was earned by selling an almirah for $Rs. 12,350$.<br>II. If there were no discount, the earned profit would have been $30$%.<br>III. The cost price of the almirah was $Rs. 10,000$.

Question 15 :
Mr. X, a business man had the income in the year $2000$, such that he earned a profit of $20$% n his investment in the business. In the year $2001$, his investment was less by Rs. $5000$ but still had the same income (Income=Investment+Profit) as that in $2000$. Thus, the percent profit earned in $2001$ increased by $6$%. What was his investment in $2000$?<br>

Question 16 :
Rani bought a piece of cloth for $Rs. 950$ and spent $Rs. 300$ on designing it. At what price should he sell it to make $30\%$ profit?

Question 17 :
A man's wages were decreased by $50\%$. Again, the reduced wages were increased by $50\%$. He has a loss of

Question 18 :
A barrel of crude oil is extracted from shale at a cost of $\$51$, and then transported to and from the refinery at a cost of $\$6$ each direction. Oil is processed three times at the refinery plant, at a cost of $\$9$ each time. What is the profit, in dollars per barrel, if one barrel is sold for $\$93$? (Profit is equal to revenue minus expenses.)

Question 19 :
A person sells $320$ mangoes at the cost price of $400$ mangoes. What is his profit per cent?<br/>

Question 20 :
A grocer purchased $200$ kg of rice at Rs. $25$ per kg. He sold $80$ kg of it at a gain of $10\%$ and $40$ kg at a loss of $4\%$. At what rate per kg should he sell the remainder to gain $8\%$ on his total investment ?

Question 21 :
A shopkeeper bought 300 eggs at 80 paise each. 30 eggs were broken in the transaction and then sold the remaining eggs at one rupee each. Find his gain or loss as per cent.

Question 22 :
A man bought 3 cows for Rs. $3000$. He sold one at a loss of $20$% and the other a profit of $33.33$%and the third one at its cost price. The selling price of the cow which was sold at a loss was?

Question 23 :
A man purchased certain no. of toffees at $25$. a rupee and same no. at $20$. a rupee. he mixed them together and sells them at $45$ per $2$ toffees. What does he gain or loss in this transaction.

Question 24 :
If the cost price of 12 pens is equal to the selling price of 8 pens, the gain percent is :

Question 25 :
The selling price of goods which cost Rs. $10$ and were sold at a gain of $10\%$ is __________.