Simple Interest Worksheet for Maths Olympiad

Maths Olympiad topic 16: Simple interest · Set 100 · 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.In how many years will ₹8500 earn ₹1700 simple interest at 5% per year? (a) 4 years (b) 5 years (c) 8 years (d) 3 years
2. 2.What is the simple interest on ₹1000 at 7% per year for 2 years? (a) ₹210 (b) ₹140 (c) ₹70 (d) ₹1140
3. 3.What is the simple interest on ₹4000 at 3% per year for 5 years? (a) ₹600 (b) ₹120 (c) ₹4600 (d) ₹720
4. 4.In how many years will ₹9500 earn ₹3135 simple interest at 11% per year? (a) 6 years (b) 2 years (c) 4 years (d) 3 years
5. 5.₹1500 is invested at 9% per year simple interest. What is the amount after 4 years? (a) ₹2040 (b) ₹1635 (c) ₹2175 (d) ₹540
6. 6.What is the simple interest on ₹9000 at 5% per year for 4 years? (a) ₹2250 (b) ₹10800 (c) ₹450 (d) ₹1800
7. 7.₹8000 is invested at 12% per year simple interest. What is the amount after 4 years? (a) ₹8960 (b) ₹11840 (c) ₹12800 (d) ₹3840
8. 8.In how many years will ₹1500 earn ₹120 simple interest at 4% per year? (a) 1 year (b) 2 years (c) 3 years (d) 4 years
9. 9.The simple interest on ₹10000 for 4 years is ₹3600. What is the rate per year? (a) 8% (b) 10% (c) 9% (d) 36%
10. 10.The simple interest on ₹8000 for 4 years is ₹960. What is the rate per year? (a) 3% (b) 12% (c) 2% (d) 4%
11. 11.In how many years will ₹10000 earn ₹1800 simple interest at 9% per year? (a) 1 year (b) 4 years (c) 3 years (d) 2 years
12. 12.What is the simple interest on ₹4000 at 7% per year for 4 years? (a) ₹1400 (b) ₹5120 (c) ₹280 (d) ₹1120
13. 13.In how many years will ₹1000 earn ₹100 simple interest at 2% per year? (a) 6 years (b) 10 years (c) 4 years (d) 5 years
14. 14.In how many years will ₹8500 earn ₹1020 simple interest at 4% per year? (a) 3 years (b) 4 years (c) 6 years (d) 2 years
15. 15.In how many years will ₹9000 earn ₹1620 simple interest at 9% per year? (a) 4 years (b) 3 years (c) 2 years (d) 1 year
16. 16.What is the simple interest on ₹9000 at 2% per year for 3 years? (a) ₹720 (b) ₹180 (c) ₹540 (d) ₹9540
17. 17.The simple interest on ₹2500 for 4 years is ₹1000. What is the rate per year? (a) 40% (b) 11% (c) 10% (d) 9%
18. 18.The simple interest on ₹7000 for 2 years is ₹420. What is the rate per year? (a) 4% (b) 3% (c) 6% (d) 2%
19. 19.₹9000 is invested at 5% per year simple interest. What is the amount after 2 years? (a) ₹9900 (b) ₹10350 (c) ₹900 (d) ₹9450
20. 20.The simple interest on ₹5000 for 4 years is ₹2000. What is the rate per year? (a) 9% (b) 40% (c) 11% (d) 10%
21. 21.What is the simple interest on ₹1000 at 5% per year for 3 years? (a) ₹150 (b) ₹200 (c) ₹50 (d) ₹1150
22. 22.In how many years will ₹5000 earn ₹750 simple interest at 3% per year? (a) 6 years (b) 10 years (c) 5 years (d) 4 years
23. 23.₹9000 is invested at 2% per year simple interest. What is the amount after 2 years? (a) ₹360 (b) ₹9540 (c) ₹9360 (d) ₹9180
24. 24.What is the simple interest on ₹2000 at 4% per year for 5 years? (a) ₹400 (b) ₹2400 (c) ₹80 (d) ₹480
25. 25.What is the simple interest on ₹10000 at 6% per year for 4 years? (a) ₹12400 (b) ₹600 (c) ₹3000 (d) ₹2400
26. 26.The simple interest on ₹6000 for 5 years is ₹1500. What is the rate per year? (a) 25% (b) 5% (c) 6% (d) 4%
27. 27.In how many years will ₹9000 earn ₹4320 simple interest at 12% per year? (a) 4 years (b) 8 years (c) 3 years (d) 5 years
28. 28.The simple interest on ₹4500 for 3 years is ₹540. What is the rate per year? (a) 5% (b) 12% (c) 3% (d) 4%
29. 29.In how many years will ₹8500 earn ₹2125 simple interest at 5% per year? (a) 6 years (b) 10 years (c) 4 years (d) 5 years
30. 30.In how many years will ₹6000 earn ₹2160 simple interest at 9% per year? (a) 8 years (b) 3 years (c) 5 years (d) 4 years
31. 31.In how many years will ₹9500 earn ₹1900 simple interest at 4% per year? (a) 10 years (b) 5 years (c) 6 years (d) 4 years
32. 32.In how many years will ₹6500 earn ₹520 simple interest at 4% per year? (a) 3 years (b) 2 years (c) 1 year (d) 4 years
33. 33.The simple interest on ₹9500 for 3 years is ₹2565. What is the rate per year? (a) 27% (b) 10% (c) 9% (d) 8%
34. 34.What is the simple interest on ₹4500 at 12% per year for 3 years? (a) ₹2160 (b) ₹1620 (c) ₹6120 (d) ₹540
35. 35.In how many years will ₹3000 earn ₹600 simple interest at 10% per year? (a) 3 years (b) 4 years (c) 2 years (d) 1 year
36. 36.In how many years will ₹2500 earn ₹400 simple interest at 4% per year? (a) 5 years (b) 8 years (c) 4 years (d) 3 years
37. 37.₹9000 is invested at 6% per year simple interest. What is the amount after 2 years? (a) ₹1080 (b) ₹9540 (c) ₹10080 (d) ₹10620
38. 38.What is the simple interest on ₹2500 at 3% per year for 5 years? (a) ₹2875 (b) ₹375 (c) ₹450 (d) ₹75
39. 39.In how many years will ₹2000 earn ₹120 simple interest at 3% per year? (a) 4 years (b) 1 year (c) 2 years (d) 3 years
40. 40.The simple interest on ₹4500 for 3 years is ₹405. What is the rate per year? (a) 4% (b) 3% (c) 2% (d) 9%

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