Simple Interest Worksheet for Maths Olympiad

Maths Olympiad topic 16: Simple interest · Set 3 · 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.₹4000 is invested at 4% per year simple interest. What is the amount after 4 years? (a) ₹4160 (b) ₹4800 (c) ₹640 (d) ₹4640
2. 2.In how many years will ₹8500 earn ₹510 simple interest at 2% per year? (a) 6 years (b) 4 years (c) 2 years (d) 3 years
3. 3.The simple interest on ₹8000 for 5 years is ₹2400. What is the rate per year? (a) 30% (b) 6% (c) 7% (d) 5%
4. 4.The simple interest on ₹5500 for 4 years is ₹440. What is the rate per year? (a) 3% (b) 2% (c) 1% (d) 8%
5. 5.What is the simple interest on ₹2000 at 6% per year for 2 years? (a) ₹120 (b) ₹2240 (c) ₹360 (d) ₹240
6. 6.₹3000 is invested at 8% per year simple interest. What is the amount after 3 years? (a) ₹720 (b) ₹3960 (c) ₹3720 (d) ₹3240
7. 7.In how many years will ₹6500 earn ₹1560 simple interest at 12% per year? (a) 3 years (b) 2 years (c) 1 year (d) 4 years
8. 8.In how many years will ₹10000 earn ₹2400 simple interest at 8% per year? (a) 3 years (b) 6 years (c) 2 years (d) 4 years
9. 9.The simple interest on ₹4500 for 5 years is ₹900. What is the rate per year? (a) 20% (b) 4% (c) 5% (d) 3%
10. 10.What is the simple interest on ₹9500 at 5% per year for 2 years? (a) ₹950 (b) ₹10450 (c) ₹1425 (d) ₹475
11. 11.In how many years will ₹2000 earn ₹300 simple interest at 5% per year? (a) 4 years (b) 2 years (c) 3 years (d) 6 years
12. 12.In how many years will ₹7000 earn ₹1050 simple interest at 5% per year? (a) 4 years (b) 3 years (c) 6 years (d) 2 years
13. 13.What is the simple interest on ₹9500 at 6% per year for 5 years? (a) ₹12350 (b) ₹3420 (c) ₹2850 (d) ₹570
14. 14.What is the simple interest on ₹6000 at 12% per year for 4 years? (a) ₹720 (b) ₹3600 (c) ₹8880 (d) ₹2880
15. 15.What is the simple interest on ₹4500 at 2% per year for 2 years? (a) ₹270 (b) ₹4680 (c) ₹90 (d) ₹180
16. 16.In how many years will ₹7500 earn ₹3000 simple interest at 8% per year? (a) 10 years (b) 5 years (c) 4 years (d) 6 years
17. 17.What is the simple interest on ₹9000 at 3% per year for 4 years? (a) ₹1350 (b) ₹270 (c) ₹1080 (d) ₹10080
18. 18.In how many years will ₹6000 earn ₹540 simple interest at 3% per year? (a) 6 years (b) 2 years (c) 4 years (d) 3 years
19. 19.The simple interest on ₹2500 for 5 years is ₹1375. What is the rate per year? (a) 11% (b) 12% (c) 55% (d) 10%
20. 20.What is the simple interest on ₹1500 at 9% per year for 3 years? (a) ₹1905 (b) ₹135 (c) ₹405 (d) ₹540
21. 21.The simple interest on ₹10000 for 2 years is ₹2200. What is the rate per year? (a) 11% (b) 10% (c) 22% (d) 12%
22. 22.What is the simple interest on ₹1500 at 7% per year for 3 years? (a) ₹315 (b) ₹420 (c) ₹1815 (d) ₹105
23. 23.What is the simple interest on ₹5500 at 7% per year for 3 years? (a) ₹6655 (b) ₹385 (c) ₹1540 (d) ₹1155
24. 24.₹2000 is invested at 12% per year simple interest. What is the amount after 2 years? (a) ₹480 (b) ₹2240 (c) ₹2480 (d) ₹2720
25. 25.What is the simple interest on ₹9500 at 11% per year for 4 years? (a) ₹1045 (b) ₹13680 (c) ₹5225 (d) ₹4180
26. 26.₹1500 is invested at 11% per year simple interest. What is the amount after 5 years? (a) ₹825 (b) ₹1665 (c) ₹2490 (d) ₹2325
27. 27.What is the simple interest on ₹4000 at 3% per year for 5 years? (a) ₹4600 (b) ₹720 (c) ₹120 (d) ₹600
28. 28.What is the simple interest on ₹8000 at 4% per year for 5 years? (a) ₹1920 (b) ₹9600 (c) ₹1600 (d) ₹320
29. 29.In how many years will ₹2500 earn ₹225 simple interest at 3% per year? (a) 2 years (b) 6 years (c) 4 years (d) 3 years
30. 30.The simple interest on ₹6500 for 5 years is ₹975. What is the rate per year? (a) 3% (b) 4% (c) 2% (d) 15%
31. 31.₹1000 is invested at 4% per year simple interest. What is the amount after 4 years? (a) ₹160 (b) ₹1040 (c) ₹1200 (d) ₹1160
32. 32.In how many years will ₹6000 earn ₹720 simple interest at 3% per year? (a) 5 years (b) 8 years (c) 3 years (d) 4 years
33. 33.The simple interest on ₹7000 for 3 years is ₹2310. What is the rate per year? (a) 10% (b) 33% (c) 11% (d) 12%
34. 34.In how many years will ₹6000 earn ₹480 simple interest at 2% per year? (a) 8 years (b) 5 years (c) 4 years (d) 3 years
35. 35.₹10000 is invested at 11% per year simple interest. What is the amount after 3 years? (a) ₹3300 (b) ₹11100 (c) ₹14400 (d) ₹13300
36. 36.What is the simple interest on ₹4000 at 4% per year for 3 years? (a) ₹480 (b) ₹160 (c) ₹4480 (d) ₹640
37. 37.₹2000 is invested at 5% per year simple interest. What is the amount after 2 years? (a) ₹200 (b) ₹2300 (c) ₹2100 (d) ₹2200
38. 38.In how many years will ₹4500 earn ₹1350 simple interest at 10% per year? (a) 3 years (b) 6 years (c) 4 years (d) 2 years
39. 39.In how many years will ₹5500 earn ₹660 simple interest at 6% per year? (a) 2 years (b) 4 years (c) 1 year (d) 3 years
40. 40.The simple interest on ₹3000 for 3 years is ₹630. What is the rate per year? (a) 21% (b) 7% (c) 8% (d) 6%

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