Simple Interest Worksheet for Maths Olympiad

Maths Olympiad topic 16: Simple interest · Set 580 · 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 ₹6000 for 4 years is ₹1920. What is the rate per year? (a) 7% (b) 32% (c) 9% (d) 8%
2. 2.The simple interest on ₹1500 for 2 years is ₹210. What is the rate per year? (a) 14% (b) 7% (c) 8% (d) 6%
3. 3.The simple interest on ₹5000 for 2 years is ₹800. What is the rate per year? (a) 8% (b) 9% (c) 16% (d) 7%
4. 4.In how many years will ₹3000 earn ₹120 simple interest at 2% per year? (a) 1 year (b) 4 years (c) 3 years (d) 2 years
5. 5.In how many years will ₹7000 earn ₹2100 simple interest at 10% per year? (a) 3 years (b) 4 years (c) 6 years (d) 2 years
6. 6.₹2000 is invested at 8% per year simple interest. What is the amount after 3 years? (a) ₹480 (b) ₹2160 (c) ₹2480 (d) ₹2640
7. 7.₹5500 is invested at 3% per year simple interest. What is the amount after 5 years? (a) ₹6325 (b) ₹5665 (c) ₹825 (d) ₹6490
8. 8.₹10000 is invested at 11% per year simple interest. What is the amount after 5 years? (a) ₹11100 (b) ₹5500 (c) ₹15500 (d) ₹16600
9. 9.What is the simple interest on ₹7500 at 12% per year for 3 years? (a) ₹10200 (b) ₹900 (c) ₹2700 (d) ₹3600
10. 10.₹7000 is invested at 4% per year simple interest. What is the amount after 4 years? (a) ₹8120 (b) ₹7280 (c) ₹1120 (d) ₹8400
11. 11.In how many years will ₹4500 earn ₹1350 simple interest at 6% per year? (a) 10 years (b) 4 years (c) 5 years (d) 6 years
12. 12.In how many years will ₹9000 earn ₹1080 simple interest at 3% per year? (a) 8 years (b) 3 years (c) 4 years (d) 5 years
13. 13.In how many years will ₹4000 earn ₹960 simple interest at 12% per year? (a) 1 year (b) 4 years (c) 3 years (d) 2 years
14. 14.The simple interest on ₹9000 for 5 years is ₹3150. What is the rate per year? (a) 8% (b) 35% (c) 7% (d) 6%
15. 15.The simple interest on ₹6000 for 2 years is ₹1200. What is the rate per year? (a) 10% (b) 9% (c) 11% (d) 20%
16. 16.In how many years will ₹7500 earn ₹450 simple interest at 3% per year? (a) 1 year (b) 3 years (c) 4 years (d) 2 years
17. 17.₹1000 is invested at 10% per year simple interest. What is the amount after 3 years? (a) ₹300 (b) ₹1400 (c) ₹1100 (d) ₹1300
18. 18.What is the simple interest on ₹7000 at 11% per year for 5 years? (a) ₹3850 (b) ₹4620 (c) ₹10850 (d) ₹770
19. 19.The simple interest on ₹8000 for 5 years is ₹2400. What is the rate per year? (a) 5% (b) 6% (c) 7% (d) 30%
20. 20.What is the simple interest on ₹7500 at 8% per year for 5 years? (a) ₹3600 (b) ₹10500 (c) ₹3000 (d) ₹600
21. 21.₹5000 is invested at 7% per year simple interest. What is the amount after 2 years? (a) ₹6050 (b) ₹700 (c) ₹5700 (d) ₹5350
22. 22.In how many years will ₹1500 earn ₹330 simple interest at 11% per year? (a) 3 years (b) 2 years (c) 1 year (d) 4 years
23. 23.The simple interest on ₹9000 for 4 years is ₹1800. What is the rate per year? (a) 4% (b) 6% (c) 20% (d) 5%
24. 24.What is the simple interest on ₹4500 at 5% per year for 3 years? (a) ₹900 (b) ₹225 (c) ₹5175 (d) ₹675
25. 25.In how many years will ₹1000 earn ₹150 simple interest at 5% per year? (a) 2 years (b) 3 years (c) 4 years (d) 6 years
26. 26.The simple interest on ₹3000 for 2 years is ₹180. What is the rate per year? (a) 2% (b) 4% (c) 3% (d) 6%
27. 27.The simple interest on ₹9000 for 3 years is ₹2700. What is the rate per year? (a) 10% (b) 11% (c) 9% (d) 30%
28. 28.In how many years will ₹2500 earn ₹400 simple interest at 8% per year? (a) 3 years (b) 4 years (c) 1 year (d) 2 years
29. 29.What is the simple interest on ₹9000 at 10% per year for 4 years? (a) ₹12600 (b) ₹4500 (c) ₹900 (d) ₹3600
30. 30.The simple interest on ₹1500 for 2 years is ₹270. What is the rate per year? (a) 18% (b) 8% (c) 9% (d) 10%
31. 31.What is the simple interest on ₹1000 at 5% per year for 5 years? (a) ₹250 (b) ₹300 (c) ₹50 (d) ₹1250
32. 32.What is the simple interest on ₹7000 at 10% per year for 2 years? (a) ₹2100 (b) ₹1400 (c) ₹8400 (d) ₹700
33. 33.₹7000 is invested at 11% per year simple interest. What is the amount after 4 years? (a) ₹10850 (b) ₹3080 (c) ₹7770 (d) ₹10080
34. 34.In how many years will ₹2500 earn ₹150 simple interest at 2% per year? (a) 6 years (b) 4 years (c) 3 years (d) 2 years
35. 35.What is the simple interest on ₹3000 at 8% per year for 4 years? (a) ₹960 (b) ₹240 (c) ₹3960 (d) ₹1200
36. 36.What is the simple interest on ₹8500 at 7% per year for 3 years? (a) ₹595 (b) ₹2380 (c) ₹1785 (d) ₹10285
37. 37.₹1500 is invested at 6% per year simple interest. What is the amount after 5 years? (a) ₹1950 (b) ₹2040 (c) ₹1590 (d) ₹450
38. 38.What is the simple interest on ₹8000 at 9% per year for 4 years? (a) ₹720 (b) ₹10880 (c) ₹3600 (d) ₹2880
39. 39.In how many years will ₹5500 earn ₹2200 simple interest at 8% per year? (a) 10 years (b) 4 years (c) 5 years (d) 6 years
40. 40.The simple interest on ₹4000 for 4 years is ₹320. What is the rate per year? (a) 3% (b) 1% (c) 8% (d) 2%

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