Simple Interest Worksheet for Maths Olympiad

Maths Olympiad topic 16: Simple interest · Set 471 · 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 ₹7500 for 3 years is ₹2475. What is the rate per year? (a) 10% (b) 12% (c) 33% (d) 11%
2. 2.In how many years will ₹2000 earn ₹240 simple interest at 6% per year? (a) 1 year (b) 3 years (c) 4 years (d) 2 years
3. 3.In how many years will ₹6000 earn ₹600 simple interest at 5% per year? (a) 3 years (b) 4 years (c) 1 year (d) 2 years
4. 4.In how many years will ₹1500 earn ₹300 simple interest at 4% per year? (a) 5 years (b) 10 years (c) 6 years (d) 4 years
5. 5.In how many years will ₹8500 earn ₹1020 simple interest at 4% per year? (a) 6 years (b) 3 years (c) 4 years (d) 2 years
6. 6.In how many years will ₹2000 earn ₹120 simple interest at 3% per year? (a) 3 years (b) 4 years (c) 2 years (d) 1 year
7. 7.₹2000 is invested at 10% per year simple interest. What is the amount after 5 years? (a) ₹1000 (b) ₹3200 (c) ₹3000 (d) ₹2200
8. 8.₹4500 is invested at 3% per year simple interest. What is the amount after 3 years? (a) ₹5040 (b) ₹4905 (c) ₹4635 (d) ₹405
9. 9.In how many years will ₹4500 earn ₹810 simple interest at 6% per year? (a) 2 years (b) 3 years (c) 6 years (d) 4 years
10. 10.What is the simple interest on ₹9000 at 6% per year for 2 years? (a) ₹1620 (b) ₹10080 (c) ₹1080 (d) ₹540
11. 11.₹6000 is invested at 11% per year simple interest. What is the amount after 3 years? (a) ₹7980 (b) ₹1980 (c) ₹8640 (d) ₹6660
12. 12.The simple interest on ₹4000 for 2 years is ₹720. What is the rate per year? (a) 8% (b) 18% (c) 9% (d) 10%
13. 13.What is the simple interest on ₹8000 at 12% per year for 3 years? (a) ₹2880 (b) ₹3840 (c) ₹10880 (d) ₹960
14. 14.In how many years will ₹1000 earn ₹280 simple interest at 7% per year? (a) 8 years (b) 5 years (c) 3 years (d) 4 years
15. 15.₹3000 is invested at 4% per year simple interest. What is the amount after 2 years? (a) ₹3240 (b) ₹3360 (c) ₹3120 (d) ₹240
16. 16.The simple interest on ₹8500 for 2 years is ₹510. What is the rate per year? (a) 3% (b) 2% (c) 4% (d) 6%
17. 17.₹1000 is invested at 6% per year simple interest. What is the amount after 2 years? (a) ₹120 (b) ₹1120 (c) ₹1060 (d) ₹1180
18. 18.What is the simple interest on ₹6000 at 10% per year for 5 years? (a) ₹3000 (b) ₹600 (c) ₹3600 (d) ₹9000
19. 19.In how many years will ₹3000 earn ₹420 simple interest at 7% per year? (a) 3 years (b) 4 years (c) 2 years (d) 1 year
20. 20.What is the simple interest on ₹1000 at 10% per year for 2 years? (a) ₹1200 (b) ₹200 (c) ₹300 (d) ₹100
21. 21.The simple interest on ₹3500 for 3 years is ₹420. What is the rate per year? (a) 3% (b) 5% (c) 4% (d) 12%
22. 22.₹4500 is invested at 9% per year simple interest. What is the amount after 5 years? (a) ₹2025 (b) ₹6525 (c) ₹4905 (d) ₹6930
23. 23.In how many years will ₹1000 earn ₹500 simple interest at 10% per year? (a) 10 years (b) 4 years (c) 5 years (d) 6 years
24. 24.What is the simple interest on ₹2500 at 5% per year for 3 years? (a) ₹500 (b) ₹2875 (c) ₹375 (d) ₹125
25. 25.In how many years will ₹4500 earn ₹1485 simple interest at 11% per year? (a) 3 years (b) 6 years (c) 4 years (d) 2 years
26. 26.₹2000 is invested at 5% per year simple interest. What is the amount after 4 years? (a) ₹2100 (b) ₹2500 (c) ₹2400 (d) ₹400
27. 27.The simple interest on ₹10000 for 4 years is ₹2800. What is the rate per year? (a) 28% (b) 6% (c) 8% (d) 7%
28. 28.What is the simple interest on ₹6500 at 4% per year for 3 years? (a) ₹780 (b) ₹260 (c) ₹7280 (d) ₹1040
29. 29.What is the simple interest on ₹8000 at 3% per year for 2 years? (a) ₹240 (b) ₹720 (c) ₹480 (d) ₹8480
30. 30.₹2000 is invested at 5% per year simple interest. What is the amount after 3 years? (a) ₹300 (b) ₹2300 (c) ₹2100 (d) ₹2400
31. 31.What is the simple interest on ₹3000 at 8% per year for 3 years? (a) ₹3720 (b) ₹240 (c) ₹960 (d) ₹720
32. 32.What is the simple interest on ₹5000 at 4% per year for 3 years? (a) ₹800 (b) ₹5600 (c) ₹600 (d) ₹200
33. 33.₹3000 is invested at 7% per year simple interest. What is the amount after 2 years? (a) ₹420 (b) ₹3210 (c) ₹3630 (d) ₹3420
34. 34.In how many years will ₹10000 earn ₹1000 simple interest at 5% per year? (a) 2 years (b) 4 years (c) 1 year (d) 3 years
35. 35.In how many years will ₹7000 earn ₹3360 simple interest at 12% per year? (a) 5 years (b) 3 years (c) 8 years (d) 4 years
36. 36.₹5000 is invested at 3% per year simple interest. What is the amount after 2 years? (a) ₹5150 (b) ₹5450 (c) ₹5300 (d) ₹300
37. 37.₹8000 is invested at 2% per year simple interest. What is the amount after 2 years? (a) ₹8320 (b) ₹320 (c) ₹8160 (d) ₹8480
38. 38.The simple interest on ₹2500 for 3 years is ₹825. What is the rate per year? (a) 12% (b) 33% (c) 10% (d) 11%
39. 39.₹9500 is invested at 5% per year simple interest. What is the amount after 4 years? (a) ₹11875 (b) ₹11400 (c) ₹9975 (d) ₹1900
40. 40.The simple interest on ₹6500 for 5 years is ₹3250. What is the rate per year? (a) 11% (b) 9% (c) 50% (d) 10%

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