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Simple Interest Worksheet for Maths Olympiad

Maths Olympiad topic 16: Simple interest · Set 895 · 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.The simple interest on ₹9000 for 4 years is ₹2160. What is the rate per year? (a) 7% (b) 5% (c) 6% (d) 24%
  2. 2.In how many years will ₹9000 earn ₹3240 simple interest at 12% per year? (a) 6 years (b) 3 years (c) 2 years (d) 4 years
  3. 3.₹2000 is invested at 5% per year simple interest. What is the amount after 2 years? (a) ₹200 (b) ₹2200 (c) ₹2300 (d) ₹2100
  4. 4.What is the simple interest on ₹1000 at 7% per year for 2 years? (a) ₹1140 (b) ₹70 (c) ₹140 (d) ₹210
  5. 5.What is the simple interest on ₹10000 at 6% per year for 3 years? (a) ₹600 (b) ₹11800 (c) ₹1800 (d) ₹2400
  6. 6.In how many years will ₹2500 earn ₹350 simple interest at 7% per year? (a) 1 year (b) 2 years (c) 3 years (d) 4 years
  7. 7.The simple interest on ₹10000 for 2 years is ₹600. What is the rate per year? (a) 6% (b) 3% (c) 2% (d) 4%
  8. 8.The simple interest on ₹6500 for 5 years is ₹975. What is the rate per year? (a) 4% (b) 15% (c) 3% (d) 2%
  9. 9.What is the simple interest on ₹1500 at 2% per year for 5 years? (a) ₹150 (b) ₹180 (c) ₹1650 (d) ₹30
  10. 10.In how many years will ₹5000 earn ₹1100 simple interest at 11% per year? (a) 4 years (b) 2 years (c) 3 years (d) 1 year
  11. 11.₹9500 is invested at 3% per year simple interest. What is the amount after 4 years? (a) ₹10640 (b) ₹10925 (c) ₹9785 (d) ₹1140
  12. 12.What is the simple interest on ₹1000 at 5% per year for 4 years? (a) ₹250 (b) ₹200 (c) ₹50 (d) ₹1200
  13. 13.What is the simple interest on ₹2000 at 9% per year for 2 years? (a) ₹180 (b) ₹540 (c) ₹360 (d) ₹2360
  14. 14.₹2500 is invested at 4% per year simple interest. What is the amount after 3 years? (a) ₹300 (b) ₹2900 (c) ₹2800 (d) ₹2600
  15. 15.₹7500 is invested at 9% per year simple interest. What is the amount after 4 years? (a) ₹2700 (b) ₹10875 (c) ₹8175 (d) ₹10200
  16. 16.What is the simple interest on ₹3000 at 8% per year for 2 years? (a) ₹3480 (b) ₹720 (c) ₹240 (d) ₹480
  17. 17.The simple interest on ₹2500 for 5 years is ₹1500. What is the rate per year? (a) 60% (b) 11% (c) 13% (d) 12%
  18. 18.₹3500 is invested at 4% per year simple interest. What is the amount after 3 years? (a) ₹420 (b) ₹3640 (c) ₹4060 (d) ₹3920
  19. 19.In how many years will ₹2000 earn ₹1000 simple interest at 10% per year? (a) 4 years (b) 10 years (c) 5 years (d) 6 years
  20. 20.In how many years will ₹3500 earn ₹315 simple interest at 3% per year? (a) 6 years (b) 3 years (c) 4 years (d) 2 years
  21. 21.What is the simple interest on ₹7000 at 4% per year for 4 years? (a) ₹1120 (b) ₹8120 (c) ₹280 (d) ₹1400
  22. 22.What is the simple interest on ₹6000 at 3% per year for 3 years? (a) ₹180 (b) ₹6540 (c) ₹540 (d) ₹720
  23. 23.What is the simple interest on ₹5000 at 5% per year for 2 years? (a) ₹500 (b) ₹750 (c) ₹250 (d) ₹5500
  24. 24.In how many years will ₹4000 earn ₹560 simple interest at 7% per year? (a) 2 years (b) 1 year (c) 3 years (d) 4 years
  25. 25.The simple interest on ₹4500 for 3 years is ₹1485. What is the rate per year? (a) 11% (b) 33% (c) 10% (d) 12%
  26. 26.The simple interest on ₹2000 for 4 years is ₹400. What is the rate per year? (a) 5% (b) 20% (c) 6% (d) 4%
  27. 27.The simple interest on ₹2000 for 2 years is ₹160. What is the rate per year? (a) 4% (b) 5% (c) 8% (d) 3%
  28. 28.In how many years will ₹4000 earn ₹2400 simple interest at 12% per year? (a) 4 years (b) 10 years (c) 6 years (d) 5 years
  29. 29.₹8000 is invested at 12% per year simple interest. What is the amount after 4 years? (a) ₹3840 (b) ₹12800 (c) ₹11840 (d) ₹8960
  30. 30.₹10000 is invested at 8% per year simple interest. What is the amount after 5 years? (a) ₹14800 (b) ₹4000 (c) ₹10800 (d) ₹14000
  31. 31.₹9500 is invested at 12% per year simple interest. What is the amount after 2 years? (a) ₹11780 (b) ₹10640 (c) ₹12920 (d) ₹2280
  32. 32.₹8000 is invested at 2% per year simple interest. What is the amount after 4 years? (a) ₹8160 (b) ₹8640 (c) ₹8800 (d) ₹640
  33. 33.₹3500 is invested at 3% per year simple interest. What is the amount after 5 years? (a) ₹4130 (b) ₹4025 (c) ₹3605 (d) ₹525
  34. 34.What is the simple interest on ₹1500 at 8% per year for 5 years? (a) ₹720 (b) ₹2100 (c) ₹600 (d) ₹120
  35. 35.₹2500 is invested at 12% per year simple interest. What is the amount after 3 years? (a) ₹2800 (b) ₹3400 (c) ₹3700 (d) ₹900
  36. 36.The simple interest on ₹6000 for 2 years is ₹720. What is the rate per year? (a) 7% (b) 12% (c) 5% (d) 6%
  37. 37.The simple interest on ₹5000 for 3 years is ₹1200. What is the rate per year? (a) 9% (b) 8% (c) 24% (d) 7%
  38. 38.In how many years will ₹6000 earn ₹1200 simple interest at 10% per year? (a) 2 years (b) 4 years (c) 1 year (d) 3 years
  39. 39.The simple interest on ₹5500 for 4 years is ₹2200. What is the rate per year? (a) 9% (b) 10% (c) 11% (d) 40%
  40. 40.What is the simple interest on ₹8500 at 2% per year for 2 years? (a) ₹8840 (b) ₹170 (c) ₹340 (d) ₹510

Answer key

  1. 6%
  2. 3 years
  3. ₹2200
  4. ₹140
  5. ₹1800
  6. 2 years
  7. 3%
  8. 3%
  9. ₹150
  10. 2 years
  11. ₹10640
  12. ₹200
  13. ₹360
  14. ₹2800
  15. ₹10200
  16. ₹480
  17. 12%
  18. ₹3920
  19. 5 years
  20. 3 years
  21. ₹1120
  22. ₹540
  23. ₹500
  24. 2 years
  25. 11%
  26. 5%
  27. 4%
  28. 5 years
  29. ₹11840
  30. ₹14000
  31. ₹11780
  32. ₹8640
  33. ₹4025
  34. ₹600
  35. ₹3400
  36. 6%
  37. 8%
  38. 2 years
  39. 10%
  40. ₹340

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