Simple Interest Worksheet for Maths Olympiad
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.What is the simple interest on ₹2500 at 7% per year for 5 years? (a) ₹3375 (b) ₹875 (c) ₹1050 (d) ₹175
- 2.₹7000 is invested at 5% per year simple interest. What is the amount after 4 years? (a) ₹7350 (b) ₹1400 (c) ₹8400 (d) ₹8750
- 3.What is the simple interest on ₹4500 at 11% per year for 5 years? (a) ₹2970 (b) ₹2475 (c) ₹495 (d) ₹6975
- 4.In how many years will ₹10000 earn ₹800 simple interest at 4% per year? (a) 1 year (b) 2 years (c) 3 years (d) 4 years
- 5.What is the simple interest on ₹4500 at 3% per year for 3 years? (a) ₹135 (b) ₹405 (c) ₹540 (d) ₹4905
- 6.The simple interest on ₹1000 for 2 years is ₹240. What is the rate per year? (a) 24% (b) 13% (c) 12% (d) 11%
- 7.₹7500 is invested at 3% per year simple interest. What is the amount after 5 years? (a) ₹8625 (b) ₹1125 (c) ₹7725 (d) ₹8850
- 8.The simple interest on ₹8000 for 3 years is ₹720. What is the rate per year? (a) 9% (b) 2% (c) 4% (d) 3%
- 9.What is the simple interest on ₹1500 at 9% per year for 3 years? (a) ₹540 (b) ₹135 (c) ₹405 (d) ₹1905
- 10.In how many years will ₹1000 earn ₹160 simple interest at 8% per year? (a) 1 year (b) 2 years (c) 4 years (d) 3 years
- 11.In how many years will ₹1500 earn ₹825 simple interest at 11% per year? (a) 6 years (b) 10 years (c) 4 years (d) 5 years
- 12.The simple interest on ₹5000 for 5 years is ₹500. What is the rate per year? (a) 3% (b) 2% (c) 1% (d) 10%
- 13.What is the simple interest on ₹3500 at 9% per year for 3 years? (a) ₹945 (b) ₹1260 (c) ₹4445 (d) ₹315
- 14.What is the simple interest on ₹8000 at 3% per year for 3 years? (a) ₹960 (b) ₹240 (c) ₹8720 (d) ₹720
- 15.The simple interest on ₹6500 for 4 years is ₹2080. What is the rate per year? (a) 9% (b) 7% (c) 32% (d) 8%
- 16.In how many years will ₹3500 earn ₹630 simple interest at 9% per year? (a) 3 years (b) 4 years (c) 2 years (d) 1 year
- 17.₹2000 is invested at 12% per year simple interest. What is the amount after 4 years? (a) ₹3200 (b) ₹2960 (c) ₹2240 (d) ₹960
- 18.The simple interest on ₹8000 for 2 years is ₹1120. What is the rate per year? (a) 6% (b) 7% (c) 8% (d) 14%
- 19.The simple interest on ₹6000 for 4 years is ₹960. What is the rate per year? (a) 16% (b) 4% (c) 5% (d) 3%
- 20.In how many years will ₹5000 earn ₹1000 simple interest at 10% per year? (a) 3 years (b) 2 years (c) 1 year (d) 4 years
- 21.What is the simple interest on ₹9000 at 11% per year for 4 years? (a) ₹3960 (b) ₹990 (c) ₹4950 (d) ₹12960
- 22.₹9000 is invested at 2% per year simple interest. What is the amount after 4 years? (a) ₹9180 (b) ₹720 (c) ₹9900 (d) ₹9720
- 23.₹6500 is invested at 2% per year simple interest. What is the amount after 2 years? (a) ₹6760 (b) ₹6630 (c) ₹6890 (d) ₹260
- 24.What is the simple interest on ₹3000 at 11% per year for 2 years? (a) ₹990 (b) ₹330 (c) ₹660 (d) ₹3660
- 25.The simple interest on ₹9500 for 3 years is ₹1140. What is the rate per year? (a) 5% (b) 3% (c) 4% (d) 12%
- 26.In how many years will ₹1500 earn ₹210 simple interest at 7% per year? (a) 1 year (b) 3 years (c) 4 years (d) 2 years
- 27.In how many years will ₹8000 earn ₹480 simple interest at 2% per year? (a) 6 years (b) 4 years (c) 3 years (d) 2 years
- 28.What is the simple interest on ₹10000 at 7% per year for 3 years? (a) ₹12100 (b) ₹2100 (c) ₹2800 (d) ₹700
- 29.The simple interest on ₹10000 for 2 years is ₹2000. What is the rate per year? (a) 10% (b) 20% (c) 11% (d) 9%
- 30.₹6500 is invested at 5% per year simple interest. What is the amount after 2 years? (a) ₹7475 (b) ₹650 (c) ₹6825 (d) ₹7150
- 31.In how many years will ₹5000 earn ₹2400 simple interest at 12% per year? (a) 4 years (b) 5 years (c) 3 years (d) 8 years
- 32.In how many years will ₹3000 earn ₹540 simple interest at 6% per year? (a) 2 years (b) 4 years (c) 6 years (d) 3 years
- 33.In how many years will ₹8500 earn ₹1360 simple interest at 4% per year? (a) 4 years (b) 3 years (c) 8 years (d) 5 years
- 34.The simple interest on ₹4000 for 2 years is ₹960. What is the rate per year? (a) 13% (b) 11% (c) 24% (d) 12%
- 35.The simple interest on ₹7000 for 2 years is ₹1680. What is the rate per year? (a) 12% (b) 11% (c) 24% (d) 13%
- 36.The simple interest on ₹1500 for 3 years is ₹135. What is the rate per year? (a) 3% (b) 4% (c) 2% (d) 9%
- 37.What is the simple interest on ₹2000 at 4% per year for 3 years? (a) ₹320 (b) ₹80 (c) ₹240 (d) ₹2240
- 38.What is the simple interest on ₹3000 at 8% per year for 2 years? (a) ₹720 (b) ₹3480 (c) ₹240 (d) ₹480
- 39.The simple interest on ₹3000 for 4 years is ₹1320. What is the rate per year? (a) 10% (b) 11% (c) 12% (d) 44%
- 40.The simple interest on ₹5000 for 4 years is ₹2200. What is the rate per year? (a) 12% (b) 44% (c) 10% (d) 11%
Answer key
- ₹875
- ₹8400
- ₹2475
- 2 years
- ₹405
- 12%
- ₹8625
- 3%
- ₹405
- 2 years
- 5 years
- 2%
- ₹945
- ₹720
- 8%
- 2 years
- ₹2960
- 7%
- 4%
- 2 years
- ₹3960
- ₹9720
- ₹6760
- ₹660
- 4%
- 2 years
- 3 years
- ₹2100
- 10%
- ₹7150
- 4 years
- 3 years
- 4 years
- 12%
- 12%
- 3%
- ₹240
- ₹480
- 11%
- 11%
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