Simple Interest Worksheet for Maths Olympiad

Maths Olympiad topic 16: Simple interest · Set 573 · 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 ₹9000 for 3 years is ₹1890. What is the rate per year? (a) 6% (b) 8% (c) 7% (d) 21%
2. 2.The simple interest on ₹1000 for 5 years is ₹400. What is the rate per year? (a) 7% (b) 40% (c) 8% (d) 9%
3. 3.The simple interest on ₹5000 for 2 years is ₹1000. What is the rate per year? (a) 10% (b) 9% (c) 20% (d) 11%
4. 4.What is the simple interest on ₹7000 at 9% per year for 4 years? (a) ₹2520 (b) ₹3150 (c) ₹630 (d) ₹9520
5. 5.In how many years will ₹4000 earn ₹240 simple interest at 3% per year? (a) 4 years (b) 2 years (c) 1 year (d) 3 years
6. 6.The simple interest on ₹10000 for 2 years is ₹1200. What is the rate per year? (a) 7% (b) 12% (c) 6% (d) 5%
7. 7.₹1000 is invested at 3% per year simple interest. What is the amount after 3 years? (a) ₹1090 (b) ₹1030 (c) ₹90 (d) ₹1120
8. 8.What is the simple interest on ₹9000 at 5% per year for 4 years? (a) ₹10800 (b) ₹450 (c) ₹1800 (d) ₹2250
9. 9.In how many years will ₹9500 earn ₹3800 simple interest at 8% per year? (a) 5 years (b) 4 years (c) 6 years (d) 10 years
10. 10.₹4500 is invested at 9% per year simple interest. What is the amount after 2 years? (a) ₹5715 (b) ₹5310 (c) ₹810 (d) ₹4905
11. 11.What is the simple interest on ₹6500 at 2% per year for 5 years? (a) ₹130 (b) ₹780 (c) ₹7150 (d) ₹650
12. 12.What is the simple interest on ₹2500 at 12% per year for 3 years? (a) ₹900 (b) ₹1200 (c) ₹300 (d) ₹3400
13. 13.What is the simple interest on ₹9000 at 11% per year for 2 years? (a) ₹2970 (b) ₹10980 (c) ₹1980 (d) ₹990
14. 14.In how many years will ₹5000 earn ₹1200 simple interest at 6% per year? (a) 8 years (b) 3 years (c) 4 years (d) 5 years
15. 15.₹6500 is invested at 12% per year simple interest. What is the amount after 4 years? (a) ₹3120 (b) ₹9620 (c) ₹10400 (d) ₹7280
16. 16.In how many years will ₹4500 earn ₹360 simple interest at 4% per year? (a) 4 years (b) 1 year (c) 3 years (d) 2 years
17. 17.What is the simple interest on ₹8000 at 9% per year for 2 years? (a) ₹2160 (b) ₹9440 (c) ₹1440 (d) ₹720
18. 18.What is the simple interest on ₹2000 at 4% per year for 3 years? (a) ₹2240 (b) ₹240 (c) ₹320 (d) ₹80
19. 19.What is the simple interest on ₹4500 at 6% per year for 3 years? (a) ₹810 (b) ₹5310 (c) ₹1080 (d) ₹270
20. 20.₹8000 is invested at 3% per year simple interest. What is the amount after 3 years? (a) ₹720 (b) ₹8960 (c) ₹8720 (d) ₹8240
21. 21.In how many years will ₹8000 earn ₹800 simple interest at 5% per year? (a) 4 years (b) 3 years (c) 2 years (d) 1 year
22. 22.₹1500 is invested at 5% per year simple interest. What is the amount after 5 years? (a) ₹1575 (b) ₹1950 (c) ₹375 (d) ₹1875
23. 23.The simple interest on ₹7500 for 3 years is ₹900. What is the rate per year? (a) 4% (b) 3% (c) 5% (d) 12%
24. 24.The simple interest on ₹5000 for 3 years is ₹450. What is the rate per year? (a) 4% (b) 9% (c) 2% (d) 3%
25. 25.In how many years will ₹4000 earn ₹160 simple interest at 2% per year? (a) 4 years (b) 2 years (c) 1 year (d) 3 years
26. 26.The simple interest on ₹2500 for 2 years is ₹300. What is the rate per year? (a) 5% (b) 7% (c) 6% (d) 12%
27. 27.The simple interest on ₹5500 for 2 years is ₹770. What is the rate per year? (a) 6% (b) 8% (c) 14% (d) 7%
28. 28.What is the simple interest on ₹9000 at 7% per year for 5 years? (a) ₹630 (b) ₹3150 (c) ₹3780 (d) ₹12150
29. 29.₹1500 is invested at 7% per year simple interest. What is the amount after 3 years? (a) ₹1815 (b) ₹1920 (c) ₹315 (d) ₹1605
30. 30.₹2000 is invested at 4% per year simple interest. What is the amount after 2 years? (a) ₹2240 (b) ₹2160 (c) ₹160 (d) ₹2080
31. 31.₹8000 is invested at 4% per year simple interest. What is the amount after 4 years? (a) ₹8320 (b) ₹9600 (c) ₹9280 (d) ₹1280
32. 32.In how many years will ₹5000 earn ₹1650 simple interest at 11% per year? (a) 2 years (b) 4 years (c) 3 years (d) 6 years
33. 33.The simple interest on ₹6500 for 5 years is ₹2600. What is the rate per year? (a) 40% (b) 7% (c) 8% (d) 9%
34. 34.What is the simple interest on ₹8500 at 6% per year for 5 years? (a) ₹510 (b) ₹3060 (c) ₹11050 (d) ₹2550
35. 35.The simple interest on ₹6000 for 5 years is ₹2100. What is the rate per year? (a) 6% (b) 7% (c) 8% (d) 35%
36. 36.₹1500 is invested at 8% per year simple interest. What is the amount after 4 years? (a) ₹1620 (b) ₹480 (c) ₹1980 (d) ₹2100
37. 37.In how many years will ₹7500 earn ₹600 simple interest at 4% per year? (a) 1 year (b) 4 years (c) 3 years (d) 2 years
38. 38.₹6500 is invested at 10% per year simple interest. What is the amount after 5 years? (a) ₹9750 (b) ₹7150 (c) ₹10400 (d) ₹3250
39. 39.What is the simple interest on ₹4500 at 3% per year for 5 years? (a) ₹810 (b) ₹135 (c) ₹675 (d) ₹5175
40. 40.In how many years will ₹7000 earn ₹3850 simple interest at 11% per year? (a) 6 years (b) 5 years (c) 4 years (d) 10 years

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