Simple Interest Worksheet for Maths Olympiad

Maths Olympiad topic 16: Simple interest · Set 128 · 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 ₹1000 for 2 years is ₹100. What is the rate per year? (a) 4% (b) 5% (c) 6% (d) 10%
2. 2.What is the simple interest on ₹3000 at 10% per year for 4 years? (a) ₹300 (b) ₹1500 (c) ₹4200 (d) ₹1200
3. 3.In how many years will ₹7500 earn ₹2100 simple interest at 7% per year? (a) 5 years (b) 4 years (c) 8 years (d) 3 years
4. 4.The simple interest on ₹8500 for 4 years is ₹2720. What is the rate per year? (a) 8% (b) 9% (c) 7% (d) 32%
5. 5.₹3000 is invested at 8% per year simple interest. What is the amount after 3 years? (a) ₹3960 (b) ₹720 (c) ₹3240 (d) ₹3720
6. 6.The simple interest on ₹9000 for 4 years is ₹4320. What is the rate per year? (a) 13% (b) 48% (c) 12% (d) 11%
7. 7.In how many years will ₹6000 earn ₹900 simple interest at 5% per year? (a) 6 years (b) 2 years (c) 4 years (d) 3 years
8. 8.What is the simple interest on ₹1000 at 12% per year for 5 years? (a) ₹720 (b) ₹600 (c) ₹120 (d) ₹1600
9. 9.In how many years will ₹2500 earn ₹100 simple interest at 2% per year? (a) 4 years (b) 2 years (c) 1 year (d) 3 years
10. 10.The simple interest on ₹1500 for 3 years is ₹135. What is the rate per year? (a) 4% (b) 9% (c) 2% (d) 3%
11. 11.₹8000 is invested at 11% per year simple interest. What is the amount after 2 years? (a) ₹1760 (b) ₹8880 (c) ₹10640 (d) ₹9760
12. 12.What is the simple interest on ₹8000 at 5% per year for 3 years? (a) ₹1600 (b) ₹400 (c) ₹9200 (d) ₹1200
13. 13.In how many years will ₹9500 earn ₹1140 simple interest at 3% per year? (a) 3 years (b) 5 years (c) 8 years (d) 4 years
14. 14.The simple interest on ₹9000 for 5 years is ₹4050. What is the rate per year? (a) 45% (b) 10% (c) 8% (d) 9%
15. 15.The simple interest on ₹7500 for 2 years is ₹1500. What is the rate per year? (a) 20% (b) 10% (c) 9% (d) 11%
16. 16.The simple interest on ₹7500 for 2 years is ₹1350. What is the rate per year? (a) 8% (b) 18% (c) 10% (d) 9%
17. 17.In how many years will ₹6500 earn ₹650 simple interest at 5% per year? (a) 3 years (b) 2 years (c) 4 years (d) 1 year
18. 18.₹2500 is invested at 10% per year simple interest. What is the amount after 3 years? (a) ₹2750 (b) ₹750 (c) ₹3500 (d) ₹3250
19. 19.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
20. 20.The simple interest on ₹9500 for 2 years is ₹760. What is the rate per year? (a) 8% (b) 4% (c) 3% (d) 5%
21. 21.The simple interest on ₹1500 for 3 years is ₹90. What is the rate per year? (a) 1% (b) 3% (c) 6% (d) 2%
22. 22.₹2000 is invested at 2% per year simple interest. What is the amount after 5 years? (a) ₹2240 (b) ₹200 (c) ₹2200 (d) ₹2040
23. 23.In how many years will ₹7500 earn ₹3600 simple interest at 12% per year? (a) 5 years (b) 8 years (c) 3 years (d) 4 years
24. 24.₹4500 is invested at 2% per year simple interest. What is the amount after 5 years? (a) ₹4950 (b) ₹5040 (c) ₹450 (d) ₹4590
25. 25.In how many years will ₹8500 earn ₹340 simple interest at 2% per year? (a) 1 year (b) 4 years (c) 3 years (d) 2 years
26. 26.What is the simple interest on ₹2500 at 3% per year for 3 years? (a) ₹2725 (b) ₹75 (c) ₹225 (d) ₹300
27. 27.What is the simple interest on ₹6500 at 7% per year for 2 years? (a) ₹1365 (b) ₹455 (c) ₹910 (d) ₹7410
28. 28.The simple interest on ₹2500 for 3 years is ₹825. What is the rate per year? (a) 33% (b) 12% (c) 10% (d) 11%
29. 29.The simple interest on ₹4500 for 5 years is ₹675. What is the rate per year? (a) 4% (b) 2% (c) 3% (d) 15%
30. 30.What is the simple interest on ₹3000 at 8% per year for 5 years? (a) ₹1200 (b) ₹4200 (c) ₹1440 (d) ₹240
31. 31.₹9000 is invested at 3% per year simple interest. What is the amount after 2 years? (a) ₹9810 (b) ₹9540 (c) ₹540 (d) ₹9270
32. 32.In how many years will ₹2000 earn ₹500 simple interest at 5% per year? (a) 10 years (b) 6 years (c) 4 years (d) 5 years
33. 33.₹8500 is invested at 3% per year simple interest. What is the amount after 5 years? (a) ₹10030 (b) ₹9775 (c) ₹8755 (d) ₹1275
34. 34.The simple interest on ₹1500 for 5 years is ₹900. What is the rate per year? (a) 60% (b) 12% (c) 11% (d) 13%
35. 35.What is the simple interest on ₹4500 at 8% per year for 2 years? (a) ₹360 (b) ₹1080 (c) ₹720 (d) ₹5220
36. 36.₹7000 is invested at 11% per year simple interest. What is the amount after 2 years? (a) ₹1540 (b) ₹7770 (c) ₹9310 (d) ₹8540
37. 37.₹2500 is invested at 2% per year simple interest. What is the amount after 3 years? (a) ₹2700 (b) ₹2650 (c) ₹2550 (d) ₹150
38. 38.What is the simple interest on ₹7500 at 10% per year for 2 years? (a) ₹750 (b) ₹9000 (c) ₹2250 (d) ₹1500
39. 39.In how many years will ₹5500 earn ₹2750 simple interest at 10% per year? (a) 10 years (b) 4 years (c) 5 years (d) 6 years
40. 40.₹3500 is invested at 11% per year simple interest. What is the amount after 4 years? (a) ₹5040 (b) ₹3885 (c) ₹1540 (d) ₹5425

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