Simple Interest, Compound Interest - Question Bank
1. If the simple interest on a sum for 2 years is Rs. 1000 and the compound interest on the same sum for 2 years is Rs. 1050, find the principal.
2. The difference between the compound interest and simple interest on Rs. 5000 for 2 years is Rs. 50. The rate of interest is:
3. A sum of money at compound interest becomes three times in 3 years. In 9 years it will be how many times itself?
4. If Rs. 64000 is invested at 5% per annum compound interest, the interest for the first year is Rs. 3200. What is the interest for the second year?
5. A sum of money doubles itself in 10 years at simple interest. In how many years will it become 4 times itself?
6. What is the difference between the compound interest and simple interest on Rs. 1000 for 3 years at 5% per annum?
7. A sum of money lent at simple interest amounts to Rs. 756 in 2 years and Rs. 1080 in 5 years. The rate of interest per annum is:
8. If the SI on a sum is Rs. 2500 for 5 years, what is the CI on the same sum for 2 years at the same rate?
9. A sum of money becomes double in 10 years at compound interest. What is the rate of interest?
10. What is the difference between the compound interest and simple interest on Rs. 5000 for 3 years at 10% per annum?
11. A sum of money becomes Rs. 1320 in 2 years and Rs. 1440 in 3 years at simple interest. The rate of interest is:
12. If the SI on a sum of money is Rs. 300 for 2 years, and the CI on the same sum for 2 years is Rs. 315, find the principal.
13. A sum of money doubles in 4 years at simple interest. In how many years will it become 5 times?
14. What is the difference between the CI and SI on Rs. 2500 for 2 years at 4% per annum?
15. If Rs. 8000 amounts to Rs. 10000 in 3 years at simple interest, what is the amount after 6 years?
16. The simple interest on a certain sum for 3 years at a certain rate is Rs. 225. The compound interest on the same sum for 2 years at the same rate is Rs. 150. Find the rate of interest.
17. A sum of money placed at compound interest doubles itself in 5 years. It will be 8 times itself in:
18. What is the compound interest on Rs. 5000 for 2 years at 4% per annum, the interest being compounded semi-annually?
19. In how many years will a sum of Rs. 3000 become Rs. 3300 at 5% simple interest per annum?
20. The population of a town increases by 10% annually. If its present population is 24200, what was its population 2 years ago?
21. A sum of money triples itself in 8 years at simple interest. In how many years will it become 7 times itself?
22. If Rs. 1200 is invested at 10% per annum compound interest, the interest for the third year is:
23. A sum of money lent out at simple interest amounts to Rs. 720 in 2 years and to Rs. 1020 in a further period of 5 years. The sum is:
24. What is the annual rate of simple interest at which Rs. 5000 will become Rs. 6000 in 4 years?
25. If a sum of money becomes double in 7 years at compound interest, in how many years will it become 4 times?
26. The difference between the compound interest and simple interest on Rs. 10000 for 2 years at 5% per annum is:
27. A sum of money at compound interest doubles itself in 5 years. In how many years will it become 8 times itself?
28. If the Simple Interest on a sum for 2 years is Rs. 200 and the Compound Interest for the same period is Rs. 210, what is the rate of interest?
29. In what time will Rs. 1000 amount to Rs. 1331 at 10% per annum compounded annually?
30. A sum of money becomes Rs. 15000 in 5 years and Rs. 17500 in 10 years at Simple Interest. What is the Principal?
31. If a sum doubles itself in 10 years at Simple Interest, in how many years will it triple itself?
32. What is the difference between CI and SI for 3 years on a sum of money at R% p.a.?
33. If the difference between CI and SI for 2 years on a sum of money at R% p.a. is Rs. X, what is the formula for the Principal (P)?
34. What is the difference between Compound Interest (CI) and Simple Interest (SI) for 2 years?
35. If P = Rs. 10000, R = 8% p.a., and T = 1 year, compounded quarterly, what is the Compound Interest (CI)?
36. When interest is compounded quarterly, the rate of interest per quarter is:
37. If P = Rs. 20000, R = 10% p.a., and T = 1 year, compounded half-yearly, what is the Amount (A)?
38. If interest is compounded half-yearly for a period of T years at a rate R% per annum, how many compounding periods are there?
39. When interest is compounded half-yearly, the rate of interest is:
40. What is the formula for calculating Compound Interest (CI)?
41. If P = Rs. 8000, R = 5% p.a., and T = 2 years, calculate the Compound Interest (CI) compounded annually.
42. What does 'R' represent in the compound interest formula A = P * (1 + R/100)^T?
43. What is the formula for calculating the Amount (A) in Compound Interest, compounded annually?
44. In compound interest, interest is calculated on:
45. Calculate the Amount (A) if P = Rs. 10000, R = 10% p.a., and T = 3 years (Simple Interest).
46. If the Principal (P) is Rs. 5000, the Rate (R) is 5% per annum, and the Time (T) is 2 years, what is the Simple Interest (SI)?
47. What is the formula for calculating the Amount (A) in Simple Interest?
48. If a sum of money is invested at a certain rate of simple interest, the interest earned each year is:
49. In the formula for Simple Interest, SI = (P * R * T) / 100, what does 'P' represent?
50. What is the formula for calculating Simple Interest (SI)?