# Percentages test 4

Feb 22, 2012

## Percentages test 4

1. The population of a town increases by 4% annually. If its present population is 12500, what will it be in 2 years time?

2. If the side of a square is increased by 10%, its area increased by k%. Find the value of k

3. If the salary of Mr. Shashi is first increased by 18% and thereafter decreased by 15%, what is the net change in his salary?

4. If the price of a commodity increases by 50%, find how much percent its consumption be reduced so as not increase the expenditure

5. Two numbers are respectively 25% and 50% more than a third number. What percent is the first of the second?

6. The radius of a circle is increased by 4%. Find the percentage increase in its area

7. The population of a town is decreased by 20% and 40% in two successive years. What percent population is decreased after two years?

8. If the price of a commodity decreases by 50%, find how much percent its consumption be increased so as not decrease the expenditure

9. Two numbers are respectively 20% and 32% less than a third number. What percent is the second of the first?

10. If A is 25% of C and B is 30% of C, then what percentage of A is B?