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.₹6500 is invested at 3% per year simple interest. What is the amount after 2 years? (a) ₹7085 (b) ₹6890 (c) ₹390 (d) ₹6695
- 2.What is the simple interest on ₹8000 at 8% per year for 5 years? (a) ₹640 (b) ₹3840 (c) ₹11200 (d) ₹3200
- 3.₹9000 is invested at 8% per year simple interest. What is the amount after 3 years? (a) ₹11880 (b) ₹2160 (c) ₹9720 (d) ₹11160
- 4.What is the simple interest on ₹1000 at 9% per year for 4 years? (a) ₹450 (b) ₹90 (c) ₹360 (d) ₹1360
- 5.In how many years will ₹3000 earn ₹270 simple interest at 3% per year? (a) 6 years (b) 2 years (c) 4 years (d) 3 years
- 6.In how many years will ₹9500 earn ₹760 simple interest at 2% per year? (a) 5 years (b) 8 years (c) 4 years (d) 3 years
- 7.In how many years will ₹8500 earn ₹1020 simple interest at 6% per year? (a) 4 years (b) 1 year (c) 3 years (d) 2 years
- 8.The simple interest on ₹6000 for 2 years is ₹1200. What is the rate per year? (a) 10% (b) 9% (c) 11% (d) 20%
- 9.What is the simple interest on ₹6000 at 10% per year for 5 years? (a) ₹600 (b) ₹9000 (c) ₹3000 (d) ₹3600
- 10.₹3500 is invested at 4% per year simple interest. What is the amount after 2 years? (a) ₹3780 (b) ₹280 (c) ₹3920 (d) ₹3640
- 11.The simple interest on ₹10000 for 5 years is ₹2000. What is the rate per year? (a) 4% (b) 20% (c) 3% (d) 5%
- 12.The simple interest on ₹9500 for 5 years is ₹5225. What is the rate per year? (a) 55% (b) 10% (c) 11% (d) 12%
- 13.The simple interest on ₹7500 for 5 years is ₹3000. What is the rate per year? (a) 7% (b) 40% (c) 9% (d) 8%
- 14.What is the simple interest on ₹8000 at 3% per year for 5 years? (a) ₹1200 (b) ₹1440 (c) ₹9200 (d) ₹240
- 15.In how many years will ₹3000 earn ₹1440 simple interest at 12% per year? (a) 4 years (b) 3 years (c) 5 years (d) 8 years
- 16.In how many years will ₹1500 earn ₹315 simple interest at 7% per year? (a) 6 years (b) 2 years (c) 4 years (d) 3 years
- 17.In how many years will ₹1000 earn ₹220 simple interest at 11% per year? (a) 1 year (b) 2 years (c) 3 years (d) 4 years
- 18.In how many years will ₹5000 earn ₹1600 simple interest at 8% per year? (a) 5 years (b) 4 years (c) 3 years (d) 8 years
- 19.What is the simple interest on ₹9500 at 8% per year for 4 years? (a) ₹3800 (b) ₹12540 (c) ₹3040 (d) ₹760
- 20.What is the simple interest on ₹3000 at 2% per year for 4 years? (a) ₹300 (b) ₹3240 (c) ₹240 (d) ₹60
- 21.The simple interest on ₹1500 for 5 years is ₹600. What is the rate per year? (a) 7% (b) 40% (c) 9% (d) 8%
- 22.What is the simple interest on ₹9500 at 11% per year for 4 years? (a) ₹5225 (b) ₹13680 (c) ₹1045 (d) ₹4180
- 23.In how many years will ₹5000 earn ₹600 simple interest at 3% per year? (a) 8 years (b) 5 years (c) 3 years (d) 4 years
- 24.What is the simple interest on ₹10000 at 11% per year for 5 years? (a) ₹5500 (b) ₹1100 (c) ₹6600 (d) ₹15500
- 25.What is the simple interest on ₹8000 at 3% per year for 3 years? (a) ₹960 (b) ₹8720 (c) ₹240 (d) ₹720
- 26.What is the simple interest on ₹2500 at 6% per year for 3 years? (a) ₹450 (b) ₹2950 (c) ₹600 (d) ₹150
- 27.The simple interest on ₹3500 for 2 years is ₹350. What is the rate per year? (a) 5% (b) 10% (c) 6% (d) 4%
- 28.₹7500 is invested at 8% per year simple interest. What is the amount after 5 years? (a) ₹3000 (b) ₹8100 (c) ₹11100 (d) ₹10500
- 29.In how many years will ₹6500 earn ₹2080 simple interest at 8% per year? (a) 8 years (b) 5 years (c) 4 years (d) 3 years
- 30.What is the simple interest on ₹1500 at 8% per year for 2 years? (a) ₹1740 (b) ₹120 (c) ₹360 (d) ₹240
- 31.In how many years will ₹2000 earn ₹240 simple interest at 6% per year? (a) 4 years (b) 3 years (c) 2 years (d) 1 year
- 32.The simple interest on ₹4000 for 2 years is ₹800. What is the rate per year? (a) 11% (b) 20% (c) 9% (d) 10%
- 33.The simple interest on ₹8000 for 5 years is ₹3600. What is the rate per year? (a) 45% (b) 9% (c) 8% (d) 10%
- 34.₹5500 is invested at 5% per year simple interest. What is the amount after 5 years? (a) ₹6875 (b) ₹7150 (c) ₹5775 (d) ₹1375
- 35.What is the simple interest on ₹2500 at 5% per year for 2 years? (a) ₹2750 (b) ₹125 (c) ₹250 (d) ₹375
- 36.The simple interest on ₹10000 for 5 years is ₹4500. What is the rate per year? (a) 9% (b) 10% (c) 45% (d) 8%
- 37.In how many years will ₹8000 earn ₹1440 simple interest at 9% per year? (a) 2 years (b) 3 years (c) 1 year (d) 4 years
- 38.The simple interest on ₹1500 for 3 years is ₹495. What is the rate per year? (a) 11% (b) 12% (c) 33% (d) 10%
- 39.₹1500 is invested at 8% per year simple interest. What is the amount after 3 years? (a) ₹1980 (b) ₹1620 (c) ₹1860 (d) ₹360
- 40.The simple interest on ₹1000 for 4 years is ₹400. What is the rate per year? (a) 10% (b) 11% (c) 9% (d) 40%
Answer key
- ₹6890
- ₹3200
- ₹11160
- ₹360
- 3 years
- 4 years
- 2 years
- 10%
- ₹3000
- ₹3780
- 4%
- 11%
- 8%
- ₹1200
- 4 years
- 3 years
- 2 years
- 4 years
- ₹3040
- ₹240
- 8%
- ₹4180
- 4 years
- ₹5500
- ₹720
- ₹450
- 5%
- ₹10500
- 4 years
- ₹240
- 2 years
- 10%
- 9%
- ₹6875
- ₹250
- 9%
- 2 years
- 11%
- ₹1860
- 10%
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