Question 1 :
Arun bought a pair of skates at a sale where the discount given was 20%. If the amount he pays is Rs 1,600, find the marked price.

Question 2 :
Vasudevan invested Rs 60,000 at an interest rate of $12\%$ per annum compounded half yearly. What amount would he get after 1 year?

Question 3 :
Arif took a loan of Rs 80,000 from a bank. If the rate of interest is 10% per annum, find the amount he would be paying after $1\frac{1}{2}$ years if the interest is compounded annually.

Question 4 :
Arif took a loan of Rs 80,000 from a bank. If the rate of interest is $10\%$ per annum, find the difference in amounts he would be paying after $1\frac{1}{2}$ years if the interest is compounded half yearly.

Question 5 :
<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 6 :
An almirah is sold at Rs 5,225 after allowing a discount of $5\%$. Find its marked price.

Question 7 :
The price of a TV is Rs 13,000. The sales tax charged on it is at the rate of 12%. Find the amount that Vinod will have to pay if he buys it.

Question 8 :
Calculate the compound interest on Rs 8,000 for 1 year at 9% per annum compound half yearly.

Question 9 :
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 parents were surveyed?

Question 10 :
Calculate the compound interest on Rs 10,000 for 1 year at $8\%$ per annum compounded half yearly.