Simple Interest, Compound Interest - One Line Questions

1. In what time will Rs. 1000 amount to Rs. 1331 at 10% per annum compounded annually? — 3 years
2. In how many years will a sum of Rs. 3000 become Rs. 3300 at 5% simple interest per annum? — 2 years
3. A sum of money at compound interest doubles itself in 5 years. In how many years will it become 8 times itself? — 15 years
4. A sum of money placed at compound interest doubles itself in 5 years. It will be 8 times itself in: — 15 years
5. 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: — 20%
6. A sum of money doubles in 4 years at simple interest. In how many years will it become 5 times? — 16 years
7. If a sum doubles itself in 10 years at Simple Interest, in how many years will it triple itself? — 20 years
8. A sum of money doubles itself in 10 years at simple interest. In how many years will it become 4 times itself? — 20 years
9. A sum of money triples itself in 8 years at simple interest. In how many years will it become 7 times itself? — 24 years
10. The population of a town increases by 10% annually. If its present population is 24200, what was its population 2 years ago? — 20000
11. What is the annual rate of simple interest at which Rs. 5000 will become Rs. 6000 in 4 years? — 5%
12. 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? — 5%
13. 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. — 10%
14. A sum of money becomes Rs. 1320 in 2 years and Rs. 1440 in 3 years at simple interest. The rate of interest is: — 7.5%
15. A sum of money becomes double in 10 years at compound interest. What is the rate of interest? — 7.18%
16. The difference between the compound interest and simple interest on Rs. 5000 for 2 years is Rs. 50. The rate of interest is: — 10%
17. If a sum of money becomes double in 7 years at compound interest, in how many years will it become 4 times? — 14 years
18. A sum of money at compound interest becomes three times in 3 years. In 9 years it will be how many times itself? — 27 times
19. What is the formula for calculating the Amount (A) in Compound Interest, compounded annually? — A = P * (1 + R/100)^T
20. What is the formula for calculating the Amount (A) in Simple Interest? — A = P + SI
21. What is the difference between Compound Interest (CI) and Simple Interest (SI) for 2 years? — CI - SI = P * (R/100)^2
22. What is the formula for calculating Compound Interest (CI)? — CI = A - P
23. When interest is compounded half-yearly, the rate of interest is: — Halved
24. If a sum of money is invested at a certain rate of simple interest, the interest earned each year is: — Constant
25. In compound interest, interest is calculated on: — The principal amount and the accumulated interest of previous periods
26. What is the difference between CI and SI for 3 years on a sum of money at R% p.a.? — P * (R/100)^2 * (3 + R/100)
27. 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)? — P = X * (100/R)^2
28. When interest is compounded quarterly, the rate of interest per quarter is: — R/4
29. In the formula for Simple Interest, SI = (P * R * T) / 100, what does 'P' represent? — Principal Amount
30. What is the difference between the CI and SI on Rs. 2500 for 2 years at 4% per annum? — Rs. 10
31. 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? — Rs. 1020
32. 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. — Rs. 12500
33. If Rs. 1200 is invested at 10% per annum compound interest, the interest for the third year is: — Rs. 145.20
34. If Rs. 8000 amounts to Rs. 10000 in 3 years at simple interest, what is the amount after 6 years? — Rs. 12500
35. A sum of money becomes Rs. 15000 in 5 years and Rs. 17500 in 10 years at Simple Interest. What is the Principal? — Rs. 12500
36. Calculate the Amount (A) if P = Rs. 10000, R = 10% p.a., and T = 3 years (Simple Interest). — Rs. 13000
37. What is the difference between the compound interest and simple interest on Rs. 5000 for 3 years at 10% per annum? — Rs. 155
38. If P = Rs. 20000, R = 10% p.a., and T = 1 year, compounded half-yearly, what is the Amount (A)? — Rs. 21000
39. The difference between the compound interest and simple interest on Rs. 10000 for 2 years at 5% per annum is: — Rs. 25
40. 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. — Rs. 3750
41. 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? — Rs. 3360
42. What is the compound interest on Rs. 5000 for 2 years at 4% per annum, the interest being compounded semi-annually? — Rs. 408
43. 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)? — Rs. 500
44. 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: — Rs. 600
45. What is the difference between the compound interest and simple interest on Rs. 1000 for 3 years at 5% per annum? — Rs. 75.625
46. If P = Rs. 8000, R = 5% p.a., and T = 2 years, calculate the Compound Interest (CI) compounded annually. — Rs. 820
47. If P = Rs. 10000, R = 8% p.a., and T = 1 year, compounded quarterly, what is the Compound Interest (CI)? — Rs. 824
48. What is the formula for calculating Simple Interest (SI)? — SI = (P * R * T) / 100
49. If interest is compounded half-yearly for a period of T years at a rate R% per annum, how many compounding periods are there? — 2T
50. What does 'R' represent in the compound interest formula A = P * (1 + R/100)^T? — Rate of Interest per annum
All One Line Questions
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