Question 1 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1cf43f59b460d7261f151.JPG' />
In the above image, a primary school, the parents were asked about the number of hours they spend per day in helping their children to do homework. There were 90 parents who help for $\frac{1}{2}$ hour to $1\frac{1}{2}$ hour. The distribution of parents according to the time for which, they said they helped is given in the above figure, $20\%$ helped for more than $1\frac{1}{2}$ hour per day. $30\%$ helped for 1 hr to $1\frac{1}{2}$ hour; 50% did not help at all. How many parents were surveyed?
Question 2 :
Calculate the compound interest on Rs 18,000 for $2\frac{1}{2}$ years at $10\%$ per annum compounded annually.
Question 3 :
An almirah is sold at Rs 5,225 after allowing a discount of $5\%$. Find its marked price.
Question 4 :
Calculate the amount on Rs 62,500 for $1\frac{1}{2}$ years at 8% per annum compounded half yearly.
Question 5 :
The population of a place increased to 54,000 in 2003 at a rate of 5% per annum. Find the population in 2001.
Question 6 :
In a primary school, the parents were asked about the number of hours they spend per day in helping their children to do homework. There were 90 parents who helped for $\frac{1}{2}$ hour to $1\frac{1}{2}$ hours. The distribution of parents according to the time for which, they said they helped is given ; $20\%$ helped for more than$1\frac{1}{2}$ hours per day; $30\%$ helped for $\frac{1}{2}$ hour to $1\frac{1}{2}$ hours; $50\%$ did not help at all. How many said that they helped for more than $1\frac{1}{2}$ hours?
Question 7 :
Fabina borrows Rs 12,500 at $12\%$ per annum for 3 years at simple interest and Radha borrows the same amount for the same time period at $10\%$ per annum, compounded annually. Who pays more interest and by how much?
Question 8 :
Find amount to be paid on Rs 15000 at $5\%$ per annum after 2 years.
Question 9 :
60% people in a city like cricket, 30% like football and the remaining like other games. If the total number of people are 50 lakh, find the exact number who like cricket game.
Question 10 :
Maria invested Rs 8,000 in a business. She would be paid interest at $5\%$ per annum compounded annually. Find the interest for the 3rd year.