Simple Interest Worksheet for Maths Olympiad

Maths Olympiad topic 16: Simple interest · Set 166 · 40 questions

How to solve it (P × R × T ÷ 100): Simple interest = P × R × T ÷ 100 (P = principal, R = rate % per year, T = years). Amount = principal + interest. Rate = SI × 100 ÷ (P × T); time = SI × 100 ÷ (P × R).

1. 1.₹4000 is invested at 3% per year simple interest. What is the amount after 4 years? (a) ₹480 (b) ₹4120 (c) ₹4480 (d) ₹4600
2. 2.₹2000 is invested at 6% per year simple interest. What is the amount after 2 years? (a) ₹2120 (b) ₹2240 (c) ₹240 (d) ₹2360
3. 3.₹1500 is invested at 12% per year simple interest. What is the amount after 3 years? (a) ₹540 (b) ₹2220 (c) ₹1680 (d) ₹2040
4. 4.What is the simple interest on ₹6500 at 6% per year for 2 years? (a) ₹7280 (b) ₹1170 (c) ₹390 (d) ₹780
5. 5.₹4000 is invested at 2% per year simple interest. What is the amount after 5 years? (a) ₹4480 (b) ₹400 (c) ₹4400 (d) ₹4080
6. 6.In how many years will ₹2500 earn ₹1200 simple interest at 12% per year? (a) 8 years (b) 3 years (c) 4 years (d) 5 years
7. 7.The simple interest on ₹6500 for 5 years is ₹1625. What is the rate per year? (a) 6% (b) 5% (c) 4% (d) 25%
8. 8.The simple interest on ₹7500 for 4 years is ₹900. What is the rate per year? (a) 3% (b) 12% (c) 2% (d) 4%
9. 9.In how many years will ₹4500 earn ₹1260 simple interest at 7% per year? (a) 3 years (b) 5 years (c) 8 years (d) 4 years
10. 10.The simple interest on ₹10000 for 2 years is ₹2400. What is the rate per year? (a) 12% (b) 13% (c) 24% (d) 11%
11. 11.The simple interest on ₹7000 for 5 years is ₹3850. What is the rate per year? (a) 55% (b) 10% (c) 12% (d) 11%
12. 12.The simple interest on ₹2500 for 2 years is ₹450. What is the rate per year? (a) 8% (b) 10% (c) 9% (d) 18%
13. 13.₹5500 is invested at 6% per year simple interest. What is the amount after 4 years? (a) ₹6820 (b) ₹7150 (c) ₹5830 (d) ₹1320
14. 14.₹8000 is invested at 12% per year simple interest. What is the amount after 4 years? (a) ₹8960 (b) ₹11840 (c) ₹12800 (d) ₹3840
15. 15.₹5500 is invested at 5% per year simple interest. What is the amount after 5 years? (a) ₹7150 (b) ₹6875 (c) ₹1375 (d) ₹5775
16. 16.In how many years will ₹6500 earn ₹2925 simple interest at 9% per year? (a) 6 years (b) 4 years (c) 5 years (d) 10 years
17. 17.What is the simple interest on ₹6000 at 4% per year for 3 years? (a) ₹240 (b) ₹720 (c) ₹960 (d) ₹6720
18. 18.In how many years will ₹8500 earn ₹1020 simple interest at 6% per year? (a) 4 years (b) 3 years (c) 1 year (d) 2 years
19. 19.In how many years will ₹5000 earn ₹600 simple interest at 3% per year? (a) 8 years (b) 5 years (c) 4 years (d) 3 years
20. 20.The simple interest on ₹4500 for 4 years is ₹1980. What is the rate per year? (a) 12% (b) 10% (c) 11% (d) 44%
21. 21.The simple interest on ₹2500 for 4 years is ₹600. What is the rate per year? (a) 7% (b) 6% (c) 5% (d) 24%
22. 22.₹6000 is invested at 3% per year simple interest. What is the amount after 2 years? (a) ₹6360 (b) ₹6180 (c) ₹360 (d) ₹6540
23. 23.The simple interest on ₹3000 for 2 years is ₹240. What is the rate per year? (a) 8% (b) 4% (c) 5% (d) 3%
24. 24.In how many years will ₹8000 earn ₹1600 simple interest at 10% per year? (a) 1 year (b) 4 years (c) 2 years (d) 3 years
25. 25.₹6500 is invested at 7% per year simple interest. What is the amount after 3 years? (a) ₹6955 (b) ₹8320 (c) ₹1365 (d) ₹7865
26. 26.The simple interest on ₹6000 for 4 years is ₹2400. What is the rate per year? (a) 9% (b) 40% (c) 11% (d) 10%
27. 27.What is the simple interest on ₹4500 at 9% per year for 2 years? (a) ₹5310 (b) ₹405 (c) ₹1215 (d) ₹810
28. 28.In how many years will ₹7500 earn ₹3750 simple interest at 10% per year? (a) 5 years (b) 10 years (c) 6 years (d) 4 years
29. 29.₹7500 is invested at 8% per year simple interest. What is the amount after 4 years? (a) ₹2400 (b) ₹8100 (c) ₹10500 (d) ₹9900
30. 30.₹2500 is invested at 6% per year simple interest. What is the amount after 4 years? (a) ₹2650 (b) ₹3250 (c) ₹3100 (d) ₹600
31. 31.The simple interest on ₹9500 for 4 years is ₹1140. What is the rate per year? (a) 3% (b) 4% (c) 2% (d) 12%
32. 32.The simple interest on ₹1000 for 2 years is ₹80. What is the rate per year? (a) 8% (b) 3% (c) 5% (d) 4%
33. 33.In how many years will ₹2000 earn ₹560 simple interest at 7% per year? (a) 8 years (b) 4 years (c) 5 years (d) 3 years
34. 34.₹2500 is invested at 9% per year simple interest. What is the amount after 2 years? (a) ₹2950 (b) ₹3175 (c) ₹2725 (d) ₹450
35. 35.What is the simple interest on ₹6000 at 5% per year for 3 years? (a) ₹1200 (b) ₹900 (c) ₹300 (d) ₹6900
36. 36.In how many years will ₹1000 earn ₹200 simple interest at 10% per year? (a) 3 years (b) 4 years (c) 1 year (d) 2 years
37. 37.₹3000 is invested at 6% per year simple interest. What is the amount after 2 years? (a) ₹3540 (b) ₹3360 (c) ₹360 (d) ₹3180
38. 38.What is the simple interest on ₹1500 at 6% per year for 2 years? (a) ₹90 (b) ₹1680 (c) ₹180 (d) ₹270
39. 39.₹8000 is invested at 10% per year simple interest. What is the amount after 5 years? (a) ₹4000 (b) ₹8800 (c) ₹12000 (d) ₹12800
40. 40.The simple interest on ₹7500 for 5 years is ₹2625. What is the rate per year? (a) 6% (b) 35% (c) 8% (d) 7%

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