Simple Interest Worksheet for Maths Olympiad

Maths Olympiad topic 16: Simple interest · Set 131 · 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 ₹3500 for 4 years is ₹1120. What is the rate per year? (a) 9% (b) 8% (c) 32% (d) 7%
2. 2.The simple interest on ₹9500 for 4 years is ₹4560. What is the rate per year? (a) 11% (b) 48% (c) 12% (d) 13%
3. 3.What is the simple interest on ₹6000 at 12% per year for 3 years? (a) ₹720 (b) ₹2160 (c) ₹8160 (d) ₹2880
4. 4.What is the simple interest on ₹7000 at 12% per year for 4 years? (a) ₹10360 (b) ₹3360 (c) ₹840 (d) ₹4200
5. 5.The simple interest on ₹10000 for 2 years is ₹2200. What is the rate per year? (a) 22% (b) 12% (c) 11% (d) 10%
6. 6.₹10000 is invested at 5% per year simple interest. What is the amount after 4 years? (a) ₹12000 (b) ₹10500 (c) ₹12500 (d) ₹2000
7. 7.What is the simple interest on ₹8000 at 8% per year for 3 years? (a) ₹9920 (b) ₹640 (c) ₹2560 (d) ₹1920
8. 8.In how many years will ₹6500 earn ₹1365 simple interest at 7% per year? (a) 4 years (b) 3 years (c) 6 years (d) 2 years
9. 9.The simple interest on ₹4500 for 5 years is ₹1575. What is the rate per year? (a) 8% (b) 6% (c) 35% (d) 7%
10. 10.The simple interest on ₹7500 for 3 years is ₹900. What is the rate per year? (a) 12% (b) 4% (c) 5% (d) 3%
11. 11.In how many years will ₹3500 earn ₹350 simple interest at 2% per year? (a) 6 years (b) 4 years (c) 10 years (d) 5 years
12. 12.What is the simple interest on ₹10000 at 9% per year for 3 years? (a) ₹2700 (b) ₹3600 (c) ₹900 (d) ₹12700
13. 13.What is the simple interest on ₹1000 at 7% per year for 2 years? (a) ₹210 (b) ₹1140 (c) ₹140 (d) ₹70
14. 14.In how many years will ₹8500 earn ₹1020 simple interest at 6% per year? (a) 1 year (b) 4 years (c) 2 years (d) 3 years
15. 15.In how many years will ₹9000 earn ₹540 simple interest at 2% per year? (a) 6 years (b) 3 years (c) 2 years (d) 4 years
16. 16.What is the simple interest on ₹1500 at 5% per year for 3 years? (a) ₹225 (b) ₹75 (c) ₹300 (d) ₹1725
17. 17.In how many years will ₹2500 earn ₹875 simple interest at 7% per year? (a) 6 years (b) 10 years (c) 5 years (d) 4 years
18. 18.₹8000 is invested at 7% per year simple interest. What is the amount after 2 years? (a) ₹9680 (b) ₹9120 (c) ₹1120 (d) ₹8560
19. 19.What is the simple interest on ₹5500 at 3% per year for 5 years? (a) ₹825 (b) ₹165 (c) ₹6325 (d) ₹990
20. 20.₹1500 is invested at 8% per year simple interest. What is the amount after 3 years? (a) ₹1980 (b) ₹1860 (c) ₹360 (d) ₹1620
21. 21.What is the simple interest on ₹8000 at 7% per year for 5 years? (a) ₹2800 (b) ₹560 (c) ₹3360 (d) ₹10800
22. 22.What is the simple interest on ₹3000 at 4% per year for 4 years? (a) ₹480 (b) ₹120 (c) ₹600 (d) ₹3480
23. 23.The simple interest on ₹7500 for 4 years is ₹1500. What is the rate per year? (a) 4% (b) 6% (c) 20% (d) 5%
24. 24.The simple interest on ₹5500 for 3 years is ₹990. What is the rate per year? (a) 5% (b) 18% (c) 7% (d) 6%
25. 25.₹7500 is invested at 5% per year simple interest. What is the amount after 3 years? (a) ₹9000 (b) ₹1125 (c) ₹8625 (d) ₹7875
26. 26.₹2000 is invested at 6% per year simple interest. What is the amount after 2 years? (a) ₹2360 (b) ₹240 (c) ₹2120 (d) ₹2240
27. 27.₹7500 is invested at 12% per year simple interest. What is the amount after 2 years? (a) ₹8400 (b) ₹1800 (c) ₹10200 (d) ₹9300
28. 28.The simple interest on ₹2500 for 5 years is ₹1000. What is the rate per year? (a) 40% (b) 7% (c) 9% (d) 8%
29. 29.What is the simple interest on ₹1000 at 2% per year for 3 years? (a) ₹80 (b) ₹60 (c) ₹20 (d) ₹1060
30. 30.The simple interest on ₹2000 for 5 years is ₹200. What is the rate per year? (a) 2% (b) 10% (c) 1% (d) 3%
31. 31.In how many years will ₹3000 earn ₹1200 simple interest at 10% per year? (a) 3 years (b) 8 years (c) 5 years (d) 4 years
32. 32.The simple interest on ₹8500 for 3 years is ₹2040. What is the rate per year? (a) 9% (b) 24% (c) 8% (d) 7%
33. 33.What is the simple interest on ₹8000 at 6% per year for 4 years? (a) ₹480 (b) ₹2400 (c) ₹1920 (d) ₹9920
34. 34.In how many years will ₹4000 earn ₹1120 simple interest at 7% per year? (a) 3 years (b) 5 years (c) 8 years (d) 4 years
35. 35.₹9000 is invested at 5% per year simple interest. What is the amount after 2 years? (a) ₹900 (b) ₹10350 (c) ₹9450 (d) ₹9900
36. 36.The simple interest on ₹5500 for 5 years is ₹1375. What is the rate per year? (a) 25% (b) 5% (c) 6% (d) 4%
37. 37.₹7000 is invested at 4% per year simple interest. What is the amount after 4 years? (a) ₹8120 (b) ₹7280 (c) ₹8400 (d) ₹1120
38. 38.In how many years will ₹9000 earn ₹1080 simple interest at 4% per year? (a) 2 years (b) 3 years (c) 6 years (d) 4 years
39. 39.In how many years will ₹1000 earn ₹500 simple interest at 10% per year? (a) 5 years (b) 10 years (c) 6 years (d) 4 years
40. 40.In how many years will ₹9500 earn ₹950 simple interest at 2% per year? (a) 10 years (b) 6 years (c) 5 years (d) 4 years

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