Simple Interest Worksheet for Maths Olympiad

Maths Olympiad topic 16: Simple interest · Set 958 · 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.The simple interest on ₹6500 for 5 years is ₹2925. What is the rate per year? (a) 10% (b) 8% (c) 9% (d) 45%
2. 2.In how many years will ₹4000 earn ₹840 simple interest at 7% per year? (a) 6 years (b) 4 years (c) 2 years (d) 3 years
3. 3.₹7500 is invested at 8% per year simple interest. What is the amount after 4 years? (a) ₹2400 (b) ₹8100 (c) ₹10500 (d) ₹9900
4. 4.The simple interest on ₹8000 for 5 years is ₹3200. What is the rate per year? (a) 9% (b) 40% (c) 7% (d) 8%
5. 5.What is the simple interest on ₹2500 at 2% per year for 3 years? (a) ₹200 (b) ₹50 (c) ₹150 (d) ₹2650
6. 6.₹2500 is invested at 11% per year simple interest. What is the amount after 4 years? (a) ₹3875 (b) ₹2775 (c) ₹3600 (d) ₹1100
7. 7.₹5000 is invested at 12% per year simple interest. What is the amount after 2 years? (a) ₹5600 (b) ₹6800 (c) ₹1200 (d) ₹6200
8. 8.In how many years will ₹5000 earn ₹300 simple interest at 2% per year? (a) 3 years (b) 6 years (c) 4 years (d) 2 years
9. 9.In how many years will ₹2500 earn ₹250 simple interest at 2% per year? (a) 4 years (b) 5 years (c) 6 years (d) 10 years
10. 10.₹2500 is invested at 12% per year simple interest. What is the amount after 4 years? (a) ₹1200 (b) ₹2800 (c) ₹3700 (d) ₹4000
11. 11.The simple interest on ₹9500 for 3 years is ₹855. What is the rate per year? (a) 2% (b) 3% (c) 4% (d) 9%
12. 12.The simple interest on ₹7000 for 4 years is ₹2800. What is the rate per year? (a) 11% (b) 40% (c) 9% (d) 10%
13. 13.₹4000 is invested at 2% per year simple interest. What is the amount after 5 years? (a) ₹4400 (b) ₹4480 (c) ₹4080 (d) ₹400
14. 14.What is the simple interest on ₹3000 at 6% per year for 4 years? (a) ₹3720 (b) ₹180 (c) ₹720 (d) ₹900
15. 15.₹6000 is invested at 9% per year simple interest. What is the amount after 4 years? (a) ₹8160 (b) ₹8700 (c) ₹2160 (d) ₹6540
16. 16.₹4000 is invested at 6% per year simple interest. What is the amount after 2 years? (a) ₹4480 (b) ₹4240 (c) ₹4720 (d) ₹480
17. 17.The simple interest on ₹10000 for 2 years is ₹400. What is the rate per year? (a) 2% (b) 3% (c) 1% (d) 4%
18. 18.₹7500 is invested at 5% per year simple interest. What is the amount after 3 years? (a) ₹1125 (b) ₹9000 (c) ₹7875 (d) ₹8625
19. 19.₹9000 is invested at 3% per year simple interest. What is the amount after 3 years? (a) ₹9270 (b) ₹810 (c) ₹10080 (d) ₹9810
20. 20.In how many years will ₹1000 earn ₹180 simple interest at 6% per year? (a) 2 years (b) 4 years (c) 3 years (d) 6 years
21. 21.The simple interest on ₹8500 for 4 years is ₹3060. What is the rate per year? (a) 8% (b) 10% (c) 36% (d) 9%
22. 22.What is the simple interest on ₹5000 at 9% per year for 2 years? (a) ₹5900 (b) ₹1350 (c) ₹900 (d) ₹450
23. 23.What is the simple interest on ₹4500 at 7% per year for 5 years? (a) ₹1890 (b) ₹6075 (c) ₹315 (d) ₹1575
24. 24.₹1000 is invested at 6% per year simple interest. What is the amount after 4 years? (a) ₹1300 (b) ₹240 (c) ₹1060 (d) ₹1240
25. 25.₹7500 is invested at 6% per year simple interest. What is the amount after 3 years? (a) ₹1350 (b) ₹7950 (c) ₹9300 (d) ₹8850
26. 26.In how many years will ₹1000 earn ₹250 simple interest at 5% per year? (a) 10 years (b) 6 years (c) 4 years (d) 5 years
27. 27.The simple interest on ₹7000 for 3 years is ₹630. What is the rate per year? (a) 9% (b) 4% (c) 2% (d) 3%
28. 28.What is the simple interest on ₹4500 at 5% per year for 4 years? (a) ₹900 (b) ₹5400 (c) ₹225 (d) ₹1125
29. 29.₹6000 is invested at 4% per year simple interest. What is the amount after 4 years? (a) ₹6960 (b) ₹6240 (c) ₹960 (d) ₹7200
30. 30.₹5500 is invested at 11% per year simple interest. What is the amount after 2 years? (a) ₹1210 (b) ₹6710 (c) ₹6105 (d) ₹7315
31. 31.The simple interest on ₹3500 for 2 years is ₹420. What is the rate per year? (a) 7% (b) 6% (c) 5% (d) 12%
32. 32.In how many years will ₹9000 earn ₹900 simple interest at 2% per year? (a) 10 years (b) 6 years (c) 5 years (d) 4 years
33. 33.In how many years will ₹6500 earn ₹1365 simple interest at 7% per year? (a) 3 years (b) 4 years (c) 6 years (d) 2 years
34. 34.In how many years will ₹4000 earn ₹400 simple interest at 5% per year? (a) 1 year (b) 4 years (c) 2 years (d) 3 years
35. 35.What is the simple interest on ₹6500 at 2% per year for 4 years? (a) ₹7020 (b) ₹130 (c) ₹650 (d) ₹520
36. 36.The simple interest on ₹4000 for 5 years is ₹1400. What is the rate per year? (a) 7% (b) 35% (c) 6% (d) 8%
37. 37.₹3000 is invested at 7% per year simple interest. What is the amount after 3 years? (a) ₹3210 (b) ₹3840 (c) ₹3630 (d) ₹630
38. 38.In how many years will ₹6500 earn ₹2860 simple interest at 11% per year? (a) 3 years (b) 8 years (c) 4 years (d) 5 years
39. 39.What is the simple interest on ₹2000 at 2% per year for 3 years? (a) ₹2120 (b) ₹40 (c) ₹160 (d) ₹120
40. 40.What is the simple interest on ₹1500 at 6% per year for 5 years? (a) ₹540 (b) ₹450 (c) ₹90 (d) ₹1950

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