Simple Interest Worksheet for Maths Olympiad

Maths Olympiad topic 16: Simple interest · Set 38 · 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 ₹1500 earn ₹450 simple interest at 10% per year? (a) 6 years (b) 3 years (c) 2 years (d) 4 years
2. 2.In how many years will ₹9500 earn ₹2565 simple interest at 9% per year? (a) 6 years (b) 4 years (c) 2 years (d) 3 years
3. 3.In how many years will ₹1500 earn ₹600 simple interest at 10% per year? (a) 5 years (b) 8 years (c) 3 years (d) 4 years
4. 4.In how many years will ₹2000 earn ₹320 simple interest at 4% per year? (a) 4 years (b) 5 years (c) 3 years (d) 8 years
5. 5.₹5500 is invested at 4% per year simple interest. What is the amount after 2 years? (a) ₹5720 (b) ₹5940 (c) ₹6160 (d) ₹440
6. 6.What is the simple interest on ₹9500 at 12% per year for 3 years? (a) ₹1140 (b) ₹3420 (c) ₹12920 (d) ₹4560
7. 7.₹7500 is invested at 3% per year simple interest. What is the amount after 4 years? (a) ₹8625 (b) ₹900 (c) ₹8400 (d) ₹7725
8. 8.₹3500 is invested at 12% per year simple interest. What is the amount after 3 years? (a) ₹1260 (b) ₹4760 (c) ₹5180 (d) ₹3920
9. 9.₹1500 is invested at 4% per year simple interest. What is the amount after 5 years? (a) ₹300 (b) ₹1560 (c) ₹1860 (d) ₹1800
10. 10.The simple interest on ₹1000 for 3 years is ₹240. What is the rate per year? (a) 9% (b) 8% (c) 7% (d) 24%
11. 11.What is the simple interest on ₹6500 at 6% per year for 5 years? (a) ₹390 (b) ₹2340 (c) ₹1950 (d) ₹8450
12. 12.What is the simple interest on ₹9000 at 5% per year for 3 years? (a) ₹1800 (b) ₹450 (c) ₹1350 (d) ₹10350
13. 13.What is the simple interest on ₹5500 at 6% per year for 3 years? (a) ₹990 (b) ₹6490 (c) ₹1320 (d) ₹330
14. 14.The simple interest on ₹8000 for 3 years is ₹2880. What is the rate per year? (a) 36% (b) 12% (c) 13% (d) 11%
15. 15.What is the simple interest on ₹4000 at 4% per year for 2 years? (a) ₹4320 (b) ₹320 (c) ₹480 (d) ₹160
16. 16.In how many years will ₹7000 earn ₹700 simple interest at 5% per year? (a) 4 years (b) 1 year (c) 2 years (d) 3 years
17. 17.₹3500 is invested at 9% per year simple interest. What is the amount after 3 years? (a) ₹4760 (b) ₹945 (c) ₹4445 (d) ₹3815
18. 18.₹2500 is invested at 2% per year simple interest. What is the amount after 4 years? (a) ₹2750 (b) ₹200 (c) ₹2700 (d) ₹2550
19. 19.₹7000 is invested at 8% per year simple interest. What is the amount after 5 years? (a) ₹7560 (b) ₹10360 (c) ₹2800 (d) ₹9800
20. 20.₹2000 is invested at 4% per year simple interest. What is the amount after 2 years? (a) ₹2160 (b) ₹2080 (c) ₹2240 (d) ₹160
21. 21.The simple interest on ₹4500 for 2 years is ₹720. What is the rate per year? (a) 16% (b) 9% (c) 7% (d) 8%
22. 22.₹9000 is invested at 5% per year simple interest. What is the amount after 4 years? (a) ₹9450 (b) ₹10800 (c) ₹1800 (d) ₹11250
23. 23.What is the simple interest on ₹3000 at 9% per year for 2 years? (a) ₹3540 (b) ₹810 (c) ₹270 (d) ₹540
24. 24.In how many years will ₹1500 earn ₹420 simple interest at 7% per year? (a) 5 years (b) 4 years (c) 8 years (d) 3 years
25. 25.In how many years will ₹5500 earn ₹1155 simple interest at 7% per year? (a) 3 years (b) 6 years (c) 4 years (d) 2 years
26. 26.What is the simple interest on ₹1500 at 3% per year for 4 years? (a) ₹1680 (b) ₹225 (c) ₹180 (d) ₹45
27. 27.What is the simple interest on ₹4000 at 4% per year for 3 years? (a) ₹160 (b) ₹640 (c) ₹480 (d) ₹4480
28. 28.₹7000 is invested at 7% per year simple interest. What is the amount after 2 years? (a) ₹8470 (b) ₹7980 (c) ₹7490 (d) ₹980
29. 29.The simple interest on ₹3000 for 2 years is ₹360. What is the rate per year? (a) 6% (b) 5% (c) 7% (d) 12%
30. 30.The simple interest on ₹4500 for 2 years is ₹900. What is the rate per year? (a) 11% (b) 9% (c) 20% (d) 10%
31. 31.The simple interest on ₹10000 for 2 years is ₹800. What is the rate per year? (a) 5% (b) 8% (c) 4% (d) 3%
32. 32.What is the simple interest on ₹3500 at 11% per year for 4 years? (a) ₹5040 (b) ₹385 (c) ₹1540 (d) ₹1925
33. 33.What is the simple interest on ₹3000 at 4% per year for 3 years? (a) ₹120 (b) ₹3360 (c) ₹360 (d) ₹480
34. 34.₹5000 is invested at 9% per year simple interest. What is the amount after 4 years? (a) ₹1800 (b) ₹6800 (c) ₹7250 (d) ₹5450
35. 35.₹9000 is invested at 4% per year simple interest. What is the amount after 3 years? (a) ₹10440 (b) ₹1080 (c) ₹9360 (d) ₹10080
36. 36.The simple interest on ₹2500 for 2 years is ₹400. What is the rate per year? (a) 8% (b) 16% (c) 9% (d) 7%
37. 37.What is the simple interest on ₹2500 at 2% per year for 3 years? (a) ₹50 (b) ₹2650 (c) ₹150 (d) ₹200
38. 38.₹2500 is invested at 10% per year simple interest. What is the amount after 5 years? (a) ₹4000 (b) ₹1250 (c) ₹2750 (d) ₹3750
39. 39.What is the simple interest on ₹7500 at 2% per year for 3 years? (a) ₹450 (b) ₹150 (c) ₹7950 (d) ₹600
40. 40.In how many years will ₹2500 earn ₹500 simple interest at 10% per year? (a) 4 years (b) 1 year (c) 2 years (d) 3 years

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