Simple Interest Worksheet for Maths Olympiad

Maths Olympiad topic 16: Simple interest · Set 103 · 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.₹9500 is invested at 6% per year simple interest. What is the amount after 3 years? (a) ₹11780 (b) ₹1710 (c) ₹10070 (d) ₹11210
2. 2.The simple interest on ₹7500 for 3 years is ₹1800. What is the rate per year? (a) 7% (b) 8% (c) 9% (d) 24%
3. 3.In how many years will ₹1500 earn ₹315 simple interest at 7% per year? (a) 2 years (b) 3 years (c) 6 years (d) 4 years
4. 4.What is the simple interest on ₹10000 at 3% per year for 3 years? (a) ₹1200 (b) ₹300 (c) ₹900 (d) ₹10900
5. 5.In how many years will ₹5500 earn ₹550 simple interest at 5% per year? (a) 1 year (b) 3 years (c) 4 years (d) 2 years
6. 6.What is the simple interest on ₹1000 at 9% per year for 3 years? (a) ₹90 (b) ₹360 (c) ₹1270 (d) ₹270
7. 7.₹2500 is invested at 9% per year simple interest. What is the amount after 3 years? (a) ₹2725 (b) ₹3175 (c) ₹3400 (d) ₹675
8. 8.What is the simple interest on ₹6000 at 3% per year for 4 years? (a) ₹6720 (b) ₹720 (c) ₹900 (d) ₹180
9. 9.₹5500 is invested at 9% per year simple interest. What is the amount after 3 years? (a) ₹7480 (b) ₹6985 (c) ₹1485 (d) ₹5995
10. 10.₹8000 is invested at 7% per year simple interest. What is the amount after 4 years? (a) ₹8560 (b) ₹2240 (c) ₹10800 (d) ₹10240
11. 11.In how many years will ₹8000 earn ₹1440 simple interest at 9% per year? (a) 1 year (b) 3 years (c) 4 years (d) 2 years
12. 12.What is the simple interest on ₹5500 at 11% per year for 3 years? (a) ₹7315 (b) ₹1815 (c) ₹605 (d) ₹2420
13. 13.In how many years will ₹3500 earn ₹490 simple interest at 7% per year? (a) 3 years (b) 1 year (c) 4 years (d) 2 years
14. 14.The simple interest on ₹7000 for 3 years is ₹2310. What is the rate per year? (a) 12% (b) 10% (c) 33% (d) 11%
15. 15.In how many years will ₹6000 earn ₹1800 simple interest at 10% per year? (a) 4 years (b) 6 years (c) 3 years (d) 2 years
16. 16.The simple interest on ₹9500 for 3 years is ₹855. What is the rate per year? (a) 2% (b) 9% (c) 4% (d) 3%
17. 17.In how many years will ₹9000 earn ₹1080 simple interest at 6% per year? (a) 1 year (b) 2 years (c) 4 years (d) 3 years
18. 18.₹3000 is invested at 2% per year simple interest. What is the amount after 5 years? (a) ₹3060 (b) ₹3360 (c) ₹300 (d) ₹3300
19. 19.In how many years will ₹1000 earn ₹360 simple interest at 9% per year? (a) 8 years (b) 3 years (c) 4 years (d) 5 years
20. 20.In how many years will ₹7000 earn ₹2100 simple interest at 6% per year? (a) 6 years (b) 5 years (c) 10 years (d) 4 years
21. 21.The simple interest on ₹5000 for 3 years is ₹1350. What is the rate per year? (a) 27% (b) 8% (c) 10% (d) 9%
22. 22.What is the simple interest on ₹4500 at 3% per year for 3 years? (a) ₹135 (b) ₹4905 (c) ₹540 (d) ₹405
23. 23.The simple interest on ₹2500 for 3 years is ₹900. What is the rate per year? (a) 11% (b) 13% (c) 12% (d) 36%
24. 24.In how many years will ₹2000 earn ₹300 simple interest at 3% per year? (a) 5 years (b) 4 years (c) 10 years (d) 6 years
25. 25.₹9000 is invested at 7% per year simple interest. What is the amount after 2 years? (a) ₹10890 (b) ₹10260 (c) ₹9630 (d) ₹1260
26. 26.₹6500 is invested at 4% per year simple interest. What is the amount after 4 years? (a) ₹7800 (b) ₹1040 (c) ₹7540 (d) ₹6760
27. 27.What is the simple interest on ₹2500 at 7% per year for 5 years? (a) ₹875 (b) ₹175 (c) ₹3375 (d) ₹1050
28. 28.In how many years will ₹4000 earn ₹480 simple interest at 3% per year? (a) 4 years (b) 3 years (c) 5 years (d) 8 years
29. 29.₹8500 is invested at 7% per year simple interest. What is the amount after 2 years? (a) ₹9095 (b) ₹1190 (c) ₹9690 (d) ₹10285
30. 30.The simple interest on ₹6500 for 4 years is ₹2860. What is the rate per year? (a) 10% (b) 44% (c) 11% (d) 12%
31. 31.₹2500 is invested at 12% per year simple interest. What is the amount after 3 years? (a) ₹2800 (b) ₹3700 (c) ₹3400 (d) ₹900
32. 32.₹8500 is invested at 3% per year simple interest. What is the amount after 3 years? (a) ₹765 (b) ₹9520 (c) ₹9265 (d) ₹8755
33. 33.The simple interest on ₹6000 for 2 years is ₹1080. What is the rate per year? (a) 8% (b) 18% (c) 9% (d) 10%
34. 34.In how many years will ₹8000 earn ₹1200 simple interest at 3% per year? (a) 10 years (b) 5 years (c) 6 years (d) 4 years
35. 35.₹6000 is invested at 6% per year simple interest. What is the amount after 3 years? (a) ₹1080 (b) ₹7440 (c) ₹7080 (d) ₹6360
36. 36.What is the simple interest on ₹6500 at 8% per year for 2 years? (a) ₹7540 (b) ₹1560 (c) ₹1040 (d) ₹520
37. 37.What is the simple interest on ₹7000 at 2% per year for 3 years? (a) ₹7420 (b) ₹560 (c) ₹140 (d) ₹420
38. 38.What is the simple interest on ₹1000 at 2% per year for 5 years? (a) ₹120 (b) ₹20 (c) ₹1100 (d) ₹100
39. 39.In how many years will ₹7000 earn ₹420 simple interest at 3% per year? (a) 3 years (b) 1 year (c) 2 years (d) 4 years
40. 40.₹3500 is invested at 12% per year simple interest. What is the amount after 2 years? (a) ₹3920 (b) ₹840 (c) ₹4760 (d) ₹4340

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