1. Mohit borrowed Rs.5000 for 2 years. What will be the compound interest if the rate of interest for first year is 2% per annum, and last year is 5% per annum respectively?

2. M lent out Rs.1200 and Rs.1500 on simple interest at equal rate of interest for 3 years and 5 years respectively. Find the rate of interest if total amount he get after time periods is Rs.3810.

3. In how many years shall Rs. 2,400 invested at the rate of 12.5% simple interest per annum, amounts to Rs. 3,900?

4. Find the rate of interest, if a certain amount becomes 25 times in 20 years at simple interest.

5. If sum amount to Rs.1331 in 3 years, at rate of interest 10% compounded annually. Then, find the Principal.

6. In how may years shall Rs. 5000 invested at the rate of 10% compound interest per annum, amount to Rs. 6,655 ?

7. A sum of money doubles itself at compound interest in 15 years. It will become 8 times in:

8. If a sum become four times in 15 years, then what will be the rate of simple interest per annum?

9. How much interest will Rs. 10,000 earn in 9 months at an annual rate of 8%

10. The difference between compound interest and simple interest on Rs. 8100 for 2 years at 20% per annum is?

11. The amount of Rs. 5000 compounded annually with the rate of interest being 5% during the first year and 12% per annum during the second year. What would be interest for 2 years?

12. A certain sum of money amounts to Rs. 1250 in 3 years and Rs. 1600 in 8 years at simple interest. Find the sum.

13. If the compound interest on a certain sum of money compounded annually for 2 years is Rs. 295 and for 3 years is Rs. 354, find the rate of interest.

14. A man borrows a sum of Rs. 7,000 which amounts to Rs. 9,800 in 4 years. What will it amount to if the rate of interest is 3% more than the initial rate?

15. Find the total compound interest when a sum of Rs. 2000 compounded annually and half-yearly at a rate of interest of 10% for a year.

16. At what rate the sum of Rs. 1000 will become Rs. 1200 in 2 year in simple interest?

17. The simple interest on a certain sum at the rate of 2% per annum in 20 years is Rs.80 more than the simple interest on same sum at 4% per annum after 9 years. Find the sum

18. A sum of money gave interest of Rs.450 at simple interest in 3 years. Find the simple interest when same sum of money invested for 5 years.

19. Find the simple interest on Rs. 2000 for 2 years at the rate of 5% per annum.

20. The compound interest of certain sum of money for 2 years at 5% per annum is Rs. 205. Find simple interest on the same time and same rate of interest .