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.The simple interest on ₹9000 for 3 years is ₹1620. What is the rate per year? (a) 18% (b) 5% (c) 6% (d) 7%
- 2.₹10000 is invested at 6% per year simple interest. What is the amount after 4 years? (a) ₹10600 (b) ₹2400 (c) ₹13000 (d) ₹12400
- 3.In how many years will ₹8000 earn ₹960 simple interest at 4% per year? (a) 6 years (b) 2 years (c) 4 years (d) 3 years
- 4.What is the simple interest on ₹5500 at 2% per year for 2 years? (a) ₹330 (b) ₹220 (c) ₹5720 (d) ₹110
- 5.The simple interest on ₹1500 for 5 years is ₹225. What is the rate per year? (a) 2% (b) 4% (c) 3% (d) 15%
- 6.The simple interest on ₹8500 for 2 years is ₹1360. What is the rate per year? (a) 9% (b) 8% (c) 7% (d) 16%
- 7.What is the simple interest on ₹4000 at 2% per year for 2 years? (a) ₹80 (b) ₹160 (c) ₹240 (d) ₹4160
- 8.₹2500 is invested at 12% per year simple interest. What is the amount after 2 years? (a) ₹3400 (b) ₹600 (c) ₹2800 (d) ₹3100
- 9.In how many years will ₹5500 earn ₹1540 simple interest at 7% per year? (a) 8 years (b) 3 years (c) 4 years (d) 5 years
- 10.In how many years will ₹9500 earn ₹1140 simple interest at 3% per year? (a) 3 years (b) 4 years (c) 5 years (d) 8 years
- 11.What is the simple interest on ₹2000 at 6% per year for 3 years? (a) ₹480 (b) ₹2360 (c) ₹120 (d) ₹360
- 12.₹8000 is invested at 9% per year simple interest. What is the amount after 3 years? (a) ₹8720 (b) ₹10880 (c) ₹2160 (d) ₹10160
- 13.What is the simple interest on ₹3000 at 4% per year for 3 years? (a) ₹3360 (b) ₹360 (c) ₹480 (d) ₹120
- 14.What is the simple interest on ₹3000 at 11% per year for 5 years? (a) ₹330 (b) ₹4650 (c) ₹1980 (d) ₹1650
- 15.What is the simple interest on ₹1000 at 3% per year for 2 years? (a) ₹60 (b) ₹30 (c) ₹90 (d) ₹1060
- 16.The simple interest on ₹3500 for 4 years is ₹1400. What is the rate per year? (a) 11% (b) 9% (c) 40% (d) 10%
- 17.What is the simple interest on ₹4000 at 11% per year for 3 years? (a) ₹440 (b) ₹1760 (c) ₹5320 (d) ₹1320
- 18.The simple interest on ₹2500 for 2 years is ₹400. What is the rate per year? (a) 9% (b) 16% (c) 8% (d) 7%
- 19.In how many years will ₹10000 earn ₹900 simple interest at 3% per year? (a) 2 years (b) 4 years (c) 3 years (d) 6 years
- 20.What is the simple interest on ₹10000 at 11% per year for 5 years? (a) ₹15500 (b) ₹1100 (c) ₹5500 (d) ₹6600
- 21.What is the simple interest on ₹8500 at 10% per year for 2 years? (a) ₹850 (b) ₹1700 (c) ₹10200 (d) ₹2550
- 22.₹2500 is invested at 2% per year simple interest. What is the amount after 5 years? (a) ₹2750 (b) ₹250 (c) ₹2550 (d) ₹2800
- 23.₹5500 is invested at 2% per year simple interest. What is the amount after 2 years? (a) ₹5610 (b) ₹220 (c) ₹5830 (d) ₹5720
- 24.What is the simple interest on ₹9500 at 11% per year for 4 years? (a) ₹5225 (b) ₹4180 (c) ₹13680 (d) ₹1045
- 25.What is the simple interest on ₹6000 at 11% per year for 2 years? (a) ₹7320 (b) ₹1980 (c) ₹1320 (d) ₹660
- 26.What is the simple interest on ₹7500 at 5% per year for 2 years? (a) ₹375 (b) ₹750 (c) ₹8250 (d) ₹1125
- 27.The simple interest on ₹3000 for 5 years is ₹450. What is the rate per year? (a) 3% (b) 4% (c) 2% (d) 15%
- 28.The simple interest on ₹3500 for 4 years is ₹560. What is the rate per year? (a) 5% (b) 3% (c) 16% (d) 4%
- 29.What is the simple interest on ₹7500 at 8% per year for 4 years? (a) ₹9900 (b) ₹3000 (c) ₹2400 (d) ₹600
- 30.The simple interest on ₹2500 for 3 years is ₹300. What is the rate per year? (a) 4% (b) 3% (c) 12% (d) 5%
- 31.The simple interest on ₹2000 for 2 years is ₹360. What is the rate per year? (a) 10% (b) 18% (c) 8% (d) 9%
- 32.What is the simple interest on ₹6000 at 3% per year for 3 years? (a) ₹6540 (b) ₹180 (c) ₹540 (d) ₹720
- 33.What is the simple interest on ₹8500 at 10% per year for 5 years? (a) ₹5100 (b) ₹850 (c) ₹4250 (d) ₹12750
- 34.The simple interest on ₹9000 for 2 years is ₹1080. What is the rate per year? (a) 12% (b) 7% (c) 6% (d) 5%
- 35.The simple interest on ₹3000 for 2 years is ₹240. What is the rate per year? (a) 8% (b) 5% (c) 3% (d) 4%
- 36.What is the simple interest on ₹4000 at 11% per year for 2 years? (a) ₹880 (b) ₹4880 (c) ₹440 (d) ₹1320
- 37.What is the simple interest on ₹5500 at 12% per year for 4 years? (a) ₹8140 (b) ₹660 (c) ₹3300 (d) ₹2640
- 38.The simple interest on ₹7500 for 3 years is ₹675. What is the rate per year? (a) 9% (b) 2% (c) 4% (d) 3%
- 39.What is the simple interest on ₹10000 at 9% per year for 4 years? (a) ₹4500 (b) ₹900 (c) ₹3600 (d) ₹13600
- 40.What is the simple interest on ₹7000 at 12% per year for 3 years? (a) ₹840 (b) ₹2520 (c) ₹9520 (d) ₹3360
Answer key
- 6%
- ₹12400
- 3 years
- ₹220
- 3%
- 8%
- ₹160
- ₹3100
- 4 years
- 4 years
- ₹360
- ₹10160
- ₹360
- ₹1650
- ₹60
- 10%
- ₹1320
- 8%
- 3 years
- ₹5500
- ₹1700
- ₹2750
- ₹5720
- ₹4180
- ₹1320
- ₹750
- 3%
- 4%
- ₹2400
- 4%
- 9%
- ₹540
- ₹4250
- 6%
- 4%
- ₹880
- ₹2640
- 3%
- ₹3600
- ₹2520
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