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Simple Interest Worksheet for Maths Olympiad

Maths Olympiad topic 16: Simple interest · Set 619 · 40 questions
TalentJR

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).

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  1. 1.₹3500 is invested at 8% per year simple interest. What is the amount after 3 years? (a) ₹4620 (b) ₹3780 (c) ₹4340 (d) ₹840
  2. 2.In how many years will ₹5000 earn ₹600 simple interest at 6% per year? (a) 2 years (b) 1 year (c) 4 years (d) 3 years
  3. 3.The simple interest on ₹5000 for 2 years is ₹700. What is the rate per year? (a) 7% (b) 8% (c) 14% (d) 6%
  4. 4.The simple interest on ₹8000 for 2 years is ₹1440. What is the rate per year? (a) 18% (b) 9% (c) 10% (d) 8%
  5. 5.₹5000 is invested at 8% per year simple interest. What is the amount after 5 years? (a) ₹5400 (b) ₹2000 (c) ₹7400 (d) ₹7000
  6. 6.What is the simple interest on ₹10000 at 7% per year for 4 years? (a) ₹700 (b) ₹3500 (c) ₹12800 (d) ₹2800
  7. 7.In how many years will ₹8000 earn ₹1760 simple interest at 11% per year? (a) 2 years (b) 4 years (c) 1 year (d) 3 years
  8. 8.₹3500 is invested at 7% per year simple interest. What is the amount after 4 years? (a) ₹4480 (b) ₹980 (c) ₹4725 (d) ₹3745
  9. 9.The simple interest on ₹3500 for 5 years is ₹525. What is the rate per year? (a) 2% (b) 4% (c) 3% (d) 15%
  10. 10.In how many years will ₹2500 earn ₹800 simple interest at 8% per year? (a) 5 years (b) 4 years (c) 3 years (d) 8 years
  11. 11.The simple interest on ₹6500 for 3 years is ₹780. What is the rate per year? (a) 12% (b) 3% (c) 4% (d) 5%
  12. 12.What is the simple interest on ₹5500 at 5% per year for 4 years? (a) ₹1375 (b) ₹1100 (c) ₹6600 (d) ₹275
  13. 13.In how many years will ₹2500 earn ₹1500 simple interest at 12% per year? (a) 10 years (b) 4 years (c) 5 years (d) 6 years
  14. 14.What is the simple interest on ₹1500 at 4% per year for 4 years? (a) ₹1740 (b) ₹60 (c) ₹300 (d) ₹240
  15. 15.The simple interest on ₹3500 for 5 years is ₹700. What is the rate per year? (a) 3% (b) 4% (c) 20% (d) 5%
  16. 16.In how many years will ₹1500 earn ₹210 simple interest at 7% per year? (a) 3 years (b) 1 year (c) 4 years (d) 2 years
  17. 17.In how many years will ₹5000 earn ₹1650 simple interest at 11% per year? (a) 2 years (b) 6 years (c) 3 years (d) 4 years
  18. 18.The simple interest on ₹7000 for 2 years is ₹1400. What is the rate per year? (a) 11% (b) 9% (c) 20% (d) 10%
  19. 19.The simple interest on ₹3000 for 5 years is ₹600. What is the rate per year? (a) 4% (b) 3% (c) 5% (d) 20%
  20. 20.The simple interest on ₹2500 for 5 years is ₹1500. What is the rate per year? (a) 60% (b) 11% (c) 12% (d) 13%
  21. 21.The simple interest on ₹7000 for 4 years is ₹3360. What is the rate per year? (a) 48% (b) 13% (c) 11% (d) 12%
  22. 22.In how many years will ₹4500 earn ₹1800 simple interest at 8% per year? (a) 6 years (b) 4 years (c) 5 years (d) 10 years
  23. 23.₹6000 is invested at 2% per year simple interest. What is the amount after 2 years? (a) ₹6360 (b) ₹6120 (c) ₹240 (d) ₹6240
  24. 24.In how many years will ₹9000 earn ₹900 simple interest at 2% per year? (a) 4 years (b) 10 years (c) 5 years (d) 6 years
  25. 25.₹3500 is invested at 8% per year simple interest. What is the amount after 4 years? (a) ₹3780 (b) ₹4900 (c) ₹4620 (d) ₹1120
  26. 26.₹6500 is invested at 6% per year simple interest. What is the amount after 4 years? (a) ₹1560 (b) ₹8450 (c) ₹8060 (d) ₹6890
  27. 27.In how many years will ₹9500 earn ₹3420 simple interest at 9% per year? (a) 5 years (b) 4 years (c) 8 years (d) 3 years
  28. 28.In how many years will ₹7500 earn ₹4125 simple interest at 11% per year? (a) 10 years (b) 6 years (c) 5 years (d) 4 years
  29. 29.In how many years will ₹1000 earn ₹120 simple interest at 4% per year? (a) 3 years (b) 4 years (c) 6 years (d) 2 years
  30. 30.The simple interest on ₹8000 for 4 years is ₹1280. What is the rate per year? (a) 3% (b) 16% (c) 5% (d) 4%
  31. 31.The simple interest on ₹3000 for 4 years is ₹1200. What is the rate per year? (a) 40% (b) 9% (c) 11% (d) 10%
  32. 32.In how many years will ₹3500 earn ₹1750 simple interest at 10% per year? (a) 4 years (b) 5 years (c) 6 years (d) 10 years
  33. 33.The simple interest on ₹3000 for 3 years is ₹810. What is the rate per year? (a) 10% (b) 8% (c) 9% (d) 27%
  34. 34.What is the simple interest on ₹9500 at 6% per year for 3 years? (a) ₹570 (b) ₹2280 (c) ₹1710 (d) ₹11210
  35. 35.₹3000 is invested at 11% per year simple interest. What is the amount after 2 years? (a) ₹660 (b) ₹3990 (c) ₹3660 (d) ₹3330
  36. 36.The simple interest on ₹7000 for 4 years is ₹1120. What is the rate per year? (a) 16% (b) 5% (c) 4% (d) 3%
  37. 37.The simple interest on ₹2500 for 5 years is ₹1125. What is the rate per year? (a) 10% (b) 45% (c) 8% (d) 9%
  38. 38.The simple interest on ₹9500 for 5 years is ₹4275. What is the rate per year? (a) 8% (b) 45% (c) 10% (d) 9%
  39. 39.In how many years will ₹5500 earn ₹330 simple interest at 2% per year? (a) 2 years (b) 6 years (c) 4 years (d) 3 years
  40. 40.The simple interest on ₹6500 for 2 years is ₹390. What is the rate per year? (a) 3% (b) 4% (c) 2% (d) 6%

Answer key

  1. ₹4340
  2. 2 years
  3. 7%
  4. 9%
  5. ₹7000
  6. ₹2800
  7. 2 years
  8. ₹4480
  9. 3%
  10. 4 years
  11. 4%
  12. ₹1100
  13. 5 years
  14. ₹240
  15. 4%
  16. 2 years
  17. 3 years
  18. 10%
  19. 4%
  20. 12%
  21. 12%
  22. 5 years
  23. ₹6240
  24. 5 years
  25. ₹4620
  26. ₹8060
  27. 4 years
  28. 5 years
  29. 3 years
  30. 4%
  31. 10%
  32. 5 years
  33. 9%
  34. ₹1710
  35. ₹3660
  36. 4%
  37. 9%
  38. 9%
  39. 3 years
  40. 3%

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