Simple Interest Worksheet for Maths Olympiad

Maths Olympiad topic 16: Simple interest · Set 30 · 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.In how many years will ₹5500 earn ₹1980 simple interest at 12% per year? (a) 2 years (b) 3 years (c) 4 years (d) 6 years
2. 2.In how many years will ₹7500 earn ₹900 simple interest at 3% per year? (a) 3 years (b) 5 years (c) 8 years (d) 4 years
3. 3.The simple interest on ₹3500 for 3 years is ₹945. What is the rate per year? (a) 10% (b) 8% (c) 27% (d) 9%
4. 4.What is the simple interest on ₹9000 at 3% per year for 4 years? (a) ₹1350 (b) ₹270 (c) ₹10080 (d) ₹1080
5. 5.In how many years will ₹3000 earn ₹1320 simple interest at 11% per year? (a) 8 years (b) 4 years (c) 5 years (d) 3 years
6. 6.₹6500 is invested at 10% per year simple interest. What is the amount after 4 years? (a) ₹2600 (b) ₹7150 (c) ₹9750 (d) ₹9100
7. 7.The simple interest on ₹5500 for 5 years is ₹3025. What is the rate per year? (a) 55% (b) 10% (c) 11% (d) 12%
8. 8.What is the simple interest on ₹1500 at 8% per year for 4 years? (a) ₹120 (b) ₹600 (c) ₹1980 (d) ₹480
9. 9.The simple interest on ₹2500 for 4 years is ₹800. What is the rate per year? (a) 7% (b) 9% (c) 8% (d) 32%
10. 10.₹9500 is invested at 7% per year simple interest. What is the amount after 3 years? (a) ₹10165 (b) ₹12160 (c) ₹1995 (d) ₹11495
11. 11.What is the simple interest on ₹3000 at 3% per year for 5 years? (a) ₹450 (b) ₹3450 (c) ₹90 (d) ₹540
12. 12.The simple interest on ₹4000 for 5 years is ₹1200. What is the rate per year? (a) 7% (b) 6% (c) 5% (d) 30%
13. 13.₹2500 is invested at 3% per year simple interest. What is the amount after 3 years? (a) ₹225 (b) ₹2800 (c) ₹2575 (d) ₹2725
14. 14.What is the simple interest on ₹5000 at 12% per year for 2 years? (a) ₹1200 (b) ₹1800 (c) ₹600 (d) ₹6200
15. 15.What is the simple interest on ₹7000 at 8% per year for 2 years? (a) ₹8120 (b) ₹1680 (c) ₹560 (d) ₹1120
16. 16.₹2000 is invested at 8% per year simple interest. What is the amount after 3 years? (a) ₹480 (b) ₹2640 (c) ₹2480 (d) ₹2160
17. 17.In how many years will ₹6000 earn ₹720 simple interest at 6% per year? (a) 2 years (b) 4 years (c) 3 years (d) 1 year
18. 18.In how many years will ₹7500 earn ₹1800 simple interest at 8% per year? (a) 4 years (b) 6 years (c) 3 years (d) 2 years
19. 19.In how many years will ₹9500 earn ₹1140 simple interest at 3% per year? (a) 5 years (b) 3 years (c) 8 years (d) 4 years
20. 20.What is the simple interest on ₹8000 at 5% per year for 3 years? (a) ₹400 (b) ₹1600 (c) ₹9200 (d) ₹1200
21. 21.In how many years will ₹9500 earn ₹2850 simple interest at 6% per year? (a) 5 years (b) 4 years (c) 6 years (d) 10 years
22. 22.In how many years will ₹8000 earn ₹480 simple interest at 3% per year? (a) 2 years (b) 4 years (c) 1 year (d) 3 years
23. 23.₹1000 is invested at 11% per year simple interest. What is the amount after 5 years? (a) ₹550 (b) ₹1660 (c) ₹1550 (d) ₹1110
24. 24.₹5500 is invested at 6% per year simple interest. What is the amount after 2 years? (a) ₹5830 (b) ₹660 (c) ₹6160 (d) ₹6490
25. 25.What is the simple interest on ₹4500 at 4% per year for 2 years? (a) ₹180 (b) ₹360 (c) ₹4860 (d) ₹540
26. 26.₹7000 is invested at 3% per year simple interest. What is the amount after 4 years? (a) ₹7210 (b) ₹8050 (c) ₹7840 (d) ₹840
27. 27.In how many years will ₹1000 earn ₹160 simple interest at 4% per year? (a) 3 years (b) 5 years (c) 4 years (d) 8 years
28. 28.What is the simple interest on ₹3000 at 10% per year for 5 years? (a) ₹300 (b) ₹1500 (c) ₹4500 (d) ₹1800
29. 29.₹7500 is invested at 2% per year simple interest. What is the amount after 3 years? (a) ₹450 (b) ₹7650 (c) ₹8100 (d) ₹7950
30. 30.The simple interest on ₹9500 for 2 years is ₹1710. What is the rate per year? (a) 18% (b) 10% (c) 8% (d) 9%
31. 31.The simple interest on ₹9000 for 4 years is ₹3960. What is the rate per year? (a) 11% (b) 44% (c) 10% (d) 12%
32. 32.₹6000 is invested at 2% per year simple interest. What is the amount after 2 years? (a) ₹6120 (b) ₹6360 (c) ₹240 (d) ₹6240
33. 33.The simple interest on ₹8000 for 4 years is ₹1600. What is the rate per year? (a) 4% (b) 20% (c) 5% (d) 6%
34. 34.In how many years will ₹7000 earn ₹1120 simple interest at 8% per year? (a) 3 years (b) 1 year (c) 2 years (d) 4 years
35. 35.The simple interest on ₹5000 for 2 years is ₹900. What is the rate per year? (a) 18% (b) 9% (c) 10% (d) 8%
36. 36.₹1500 is invested at 11% per year simple interest. What is the amount after 3 years? (a) ₹2160 (b) ₹1995 (c) ₹495 (d) ₹1665
37. 37.₹4500 is invested at 2% per year simple interest. What is the amount after 2 years? (a) ₹4770 (b) ₹4680 (c) ₹4590 (d) ₹180
38. 38.The simple interest on ₹8000 for 4 years is ₹2240. What is the rate per year? (a) 7% (b) 28% (c) 6% (d) 8%
39. 39.₹8500 is invested at 2% per year simple interest. What is the amount after 5 years? (a) ₹850 (b) ₹8670 (c) ₹9520 (d) ₹9350
40. 40.What is the simple interest on ₹2500 at 5% per year for 3 years? (a) ₹125 (b) ₹2875 (c) ₹500 (d) ₹375

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