Simple Interest Worksheet for Maths Olympiad

Maths Olympiad topic 16: Simple interest · Set 34 · 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.₹3000 is invested at 10% per year simple interest. What is the amount after 3 years? (a) ₹900 (b) ₹3300 (c) ₹4200 (d) ₹3900
2. 2.In how many years will ₹1000 earn ₹600 simple interest at 12% per year? (a) 10 years (b) 5 years (c) 6 years (d) 4 years
3. 3.The simple interest on ₹9000 for 5 years is ₹2700. What is the rate per year? (a) 5% (b) 7% (c) 6% (d) 30%
4. 4.The simple interest on ₹6500 for 3 years is ₹1365. What is the rate per year? (a) 7% (b) 8% (c) 6% (d) 21%
5. 5.What is the simple interest on ₹7000 at 4% per year for 5 years? (a) ₹8400 (b) ₹1400 (c) ₹280 (d) ₹1680
6. 6.What is the simple interest on ₹3000 at 11% per year for 2 years? (a) ₹330 (b) ₹3660 (c) ₹660 (d) ₹990
7. 7.What is the simple interest on ₹9000 at 5% per year for 5 years? (a) ₹11250 (b) ₹2250 (c) ₹2700 (d) ₹450
8. 8.₹8000 is invested at 7% per year simple interest. What is the amount after 5 years? (a) ₹2800 (b) ₹8560 (c) ₹11360 (d) ₹10800
9. 9.What is the simple interest on ₹7000 at 3% per year for 2 years? (a) ₹420 (b) ₹630 (c) ₹7420 (d) ₹210
10. 10.₹5000 is invested at 3% per year simple interest. What is the amount after 2 years? (a) ₹5300 (b) ₹5150 (c) ₹5450 (d) ₹300
11. 11.₹9000 is invested at 5% per year simple interest. What is the amount after 3 years? (a) ₹1350 (b) ₹10800 (c) ₹9450 (d) ₹10350
12. 12.The simple interest on ₹3000 for 4 years is ₹1320. What is the rate per year? (a) 12% (b) 11% (c) 10% (d) 44%
13. 13.What is the simple interest on ₹8500 at 3% per year for 5 years? (a) ₹255 (b) ₹1275 (c) ₹1530 (d) ₹9775
14. 14.₹4500 is invested at 5% per year simple interest. What is the amount after 5 years? (a) ₹1125 (b) ₹5850 (c) ₹5625 (d) ₹4725
15. 15.In how many years will ₹1000 earn ₹300 simple interest at 6% per year? (a) 5 years (b) 10 years (c) 4 years (d) 6 years
16. 16.What is the simple interest on ₹5000 at 9% per year for 2 years? (a) ₹900 (b) ₹5900 (c) ₹1350 (d) ₹450
17. 17.What is the simple interest on ₹7500 at 11% per year for 4 years? (a) ₹10800 (b) ₹4125 (c) ₹3300 (d) ₹825
18. 18.In how many years will ₹7500 earn ₹2025 simple interest at 9% per year? (a) 2 years (b) 3 years (c) 6 years (d) 4 years
19. 19.The simple interest on ₹2000 for 3 years is ₹600. What is the rate per year? (a) 30% (b) 11% (c) 10% (d) 9%
20. 20.What is the simple interest on ₹3000 at 6% per year for 5 years? (a) ₹1080 (b) ₹3900 (c) ₹180 (d) ₹900
21. 21.₹5500 is invested at 7% per year simple interest. What is the amount after 3 years? (a) ₹6655 (b) ₹5885 (c) ₹1155 (d) ₹7040
22. 22.What is the simple interest on ₹8000 at 10% per year for 4 years? (a) ₹11200 (b) ₹4000 (c) ₹800 (d) ₹3200
23. 23.What is the simple interest on ₹5000 at 9% per year for 4 years? (a) ₹2250 (b) ₹450 (c) ₹1800 (d) ₹6800
24. 24.What is the simple interest on ₹5000 at 8% per year for 4 years? (a) ₹6600 (b) ₹1600 (c) ₹400 (d) ₹2000
25. 25.The simple interest on ₹2000 for 2 years is ₹480. What is the rate per year? (a) 13% (b) 11% (c) 24% (d) 12%
26. 26.In how many years will ₹8000 earn ₹960 simple interest at 6% per year? (a) 3 years (b) 2 years (c) 1 year (d) 4 years
27. 27.In how many years will ₹3000 earn ₹420 simple interest at 7% per year? (a) 4 years (b) 3 years (c) 1 year (d) 2 years
28. 28.The simple interest on ₹6000 for 4 years is ₹1920. What is the rate per year? (a) 32% (b) 9% (c) 7% (d) 8%
29. 29.What is the simple interest on ₹8000 at 5% per year for 4 years? (a) ₹2000 (b) ₹1600 (c) ₹9600 (d) ₹400
30. 30.What is the simple interest on ₹7000 at 2% per year for 5 years? (a) ₹700 (b) ₹7700 (c) ₹840 (d) ₹140
31. 31.The simple interest on ₹10000 for 5 years is ₹4000. What is the rate per year? (a) 7% (b) 8% (c) 9% (d) 40%
32. 32.In how many years will ₹4500 earn ₹540 simple interest at 3% per year? (a) 8 years (b) 5 years (c) 3 years (d) 4 years
33. 33.The simple interest on ₹6000 for 2 years is ₹480. What is the rate per year? (a) 3% (b) 5% (c) 4% (d) 8%
34. 34.In how many years will ₹6000 earn ₹2160 simple interest at 9% per year? (a) 4 years (b) 3 years (c) 8 years (d) 5 years
35. 35.In how many years will ₹1500 earn ₹405 simple interest at 9% per year? (a) 2 years (b) 6 years (c) 3 years (d) 4 years
36. 36.What is the simple interest on ₹6000 at 10% per year for 4 years? (a) ₹600 (b) ₹3000 (c) ₹2400 (d) ₹8400
37. 37.What is the simple interest on ₹9000 at 2% per year for 2 years? (a) ₹360 (b) ₹9360 (c) ₹540 (d) ₹180
38. 38.₹5500 is invested at 2% per year simple interest. What is the amount after 4 years? (a) ₹6050 (b) ₹440 (c) ₹5610 (d) ₹5940
39. 39.The simple interest on ₹6500 for 5 years is ₹3250. What is the rate per year? (a) 11% (b) 10% (c) 50% (d) 9%
40. 40.In how many years will ₹4000 earn ₹560 simple interest at 7% per year? (a) 4 years (b) 3 years (c) 2 years (d) 1 year

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