Simple Interest Worksheet for Maths Olympiad

Maths Olympiad topic 16: Simple interest · Set 275 · 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 ₹1500 for 3 years is ₹405. What is the rate per year? (a) 8% (b) 10% (c) 27% (d) 9%
2. 2.In how many years will ₹2500 earn ₹375 simple interest at 5% per year? (a) 6 years (b) 2 years (c) 3 years (d) 4 years
3. 3.What is the simple interest on ₹3500 at 10% per year for 3 years? (a) ₹4550 (b) ₹1050 (c) ₹1400 (d) ₹350
4. 4.What is the simple interest on ₹7500 at 8% per year for 5 years? (a) ₹3600 (b) ₹3000 (c) ₹600 (d) ₹10500
5. 5.In how many years will ₹7500 earn ₹675 simple interest at 3% per year? (a) 6 years (b) 4 years (c) 3 years (d) 2 years
6. 6.In how many years will ₹1000 earn ₹200 simple interest at 10% per year? (a) 1 year (b) 4 years (c) 2 years (d) 3 years
7. 7.₹8000 is invested at 3% per year simple interest. What is the amount after 3 years? (a) ₹8720 (b) ₹8240 (c) ₹720 (d) ₹8960
8. 8.The simple interest on ₹4000 for 3 years is ₹720. What is the rate per year? (a) 7% (b) 18% (c) 5% (d) 6%
9. 9.In how many years will ₹8000 earn ₹960 simple interest at 3% per year? (a) 4 years (b) 8 years (c) 3 years (d) 5 years
10. 10.In how many years will ₹8000 earn ₹1440 simple interest at 6% per year? (a) 6 years (b) 4 years (c) 3 years (d) 2 years
11. 11.₹2000 is invested at 9% per year simple interest. What is the amount after 4 years? (a) ₹720 (b) ₹2900 (c) ₹2180 (d) ₹2720
12. 12.In how many years will ₹3000 earn ₹450 simple interest at 3% per year? (a) 5 years (b) 4 years (c) 6 years (d) 10 years
13. 13.In how many years will ₹8000 earn ₹1920 simple interest at 6% per year? (a) 5 years (b) 8 years (c) 4 years (d) 3 years
14. 14.What is the simple interest on ₹1000 at 8% per year for 4 years? (a) ₹320 (b) ₹1320 (c) ₹80 (d) ₹400
15. 15.₹2000 is invested at 6% per year simple interest. What is the amount after 4 years? (a) ₹2480 (b) ₹480 (c) ₹2120 (d) ₹2600
16. 16.₹1000 is invested at 12% per year simple interest. What is the amount after 3 years? (a) ₹1120 (b) ₹360 (c) ₹1480 (d) ₹1360
17. 17.In how many years will ₹9000 earn ₹1620 simple interest at 6% per year? (a) 4 years (b) 3 years (c) 2 years (d) 6 years
18. 18.What is the simple interest on ₹5000 at 8% per year for 5 years? (a) ₹400 (b) ₹2000 (c) ₹2400 (d) ₹7000
19. 19.₹5000 is invested at 2% per year simple interest. What is the amount after 2 years? (a) ₹5300 (b) ₹5200 (c) ₹5100 (d) ₹200
20. 20.₹7500 is invested at 7% per year simple interest. What is the amount after 3 years? (a) ₹9600 (b) ₹8025 (c) ₹1575 (d) ₹9075
21. 21.The simple interest on ₹3500 for 3 years is ₹735. What is the rate per year? (a) 6% (b) 21% (c) 7% (d) 8%
22. 22.The simple interest on ₹4000 for 4 years is ₹640. What is the rate per year? (a) 4% (b) 3% (c) 5% (d) 16%
23. 23.What is the simple interest on ₹7500 at 10% per year for 4 years? (a) ₹3000 (b) ₹750 (c) ₹3750 (d) ₹10500
24. 24.₹3000 is invested at 9% per year simple interest. What is the amount after 3 years? (a) ₹810 (b) ₹3270 (c) ₹3810 (d) ₹4080
25. 25.The simple interest on ₹7000 for 2 years is ₹280. What is the rate per year? (a) 4% (b) 1% (c) 3% (d) 2%
26. 26.What is the simple interest on ₹8000 at 10% per year for 2 years? (a) ₹2400 (b) ₹9600 (c) ₹1600 (d) ₹800
27. 27.₹2000 is invested at 10% per year simple interest. What is the amount after 2 years? (a) ₹2200 (b) ₹2400 (c) ₹2600 (d) ₹400
28. 28.₹1000 is invested at 8% per year simple interest. What is the amount after 5 years? (a) ₹400 (b) ₹1480 (c) ₹1400 (d) ₹1080
29. 29.What is the simple interest on ₹2000 at 4% per year for 3 years? (a) ₹80 (b) ₹320 (c) ₹2240 (d) ₹240
30. 30.The simple interest on ₹1500 for 5 years is ₹675. What is the rate per year? (a) 9% (b) 10% (c) 45% (d) 8%
31. 31.What is the simple interest on ₹9500 at 3% per year for 3 years? (a) ₹1140 (b) ₹285 (c) ₹10355 (d) ₹855
32. 32.The simple interest on ₹1000 for 5 years is ₹250. What is the rate per year? (a) 25% (b) 6% (c) 4% (d) 5%
33. 33.What is the simple interest on ₹9000 at 3% per year for 3 years? (a) ₹270 (b) ₹810 (c) ₹1080 (d) ₹9810
34. 34.₹4000 is invested at 7% per year simple interest. What is the amount after 2 years? (a) ₹4280 (b) ₹4840 (c) ₹560 (d) ₹4560
35. 35.In how many years will ₹2500 earn ₹700 simple interest at 7% per year? (a) 4 years (b) 5 years (c) 3 years (d) 8 years
36. 36.The simple interest on ₹6500 for 5 years is ₹3575. What is the rate per year? (a) 12% (b) 11% (c) 10% (d) 55%
37. 37.In how many years will ₹7000 earn ₹1050 simple interest at 5% per year? (a) 3 years (b) 6 years (c) 4 years (d) 2 years
38. 38.In how many years will ₹8500 earn ₹1275 simple interest at 5% per year? (a) 3 years (b) 6 years (c) 4 years (d) 2 years
39. 39.The simple interest on ₹4000 for 4 years is ₹960. What is the rate per year? (a) 6% (b) 24% (c) 7% (d) 5%
40. 40.What is the simple interest on ₹9500 at 11% per year for 3 years? (a) ₹3135 (b) ₹4180 (c) ₹12635 (d) ₹1045

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