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.In how many years will ₹7500 earn ₹900 simple interest at 3% per year? (a) 8 years (b) 5 years (c) 4 years (d) 3 years
- 2.What is the simple interest on ₹6500 at 12% per year for 2 years? (a) ₹1560 (b) ₹8060 (c) ₹780 (d) ₹2340
- 3.₹4000 is invested at 4% per year simple interest. What is the amount after 3 years? (a) ₹480 (b) ₹4640 (c) ₹4160 (d) ₹4480
- 4.The simple interest on ₹3500 for 5 years is ₹2100. What is the rate per year? (a) 11% (b) 12% (c) 13% (d) 60%
- 5.₹5500 is invested at 4% per year simple interest. What is the amount after 3 years? (a) ₹660 (b) ₹5720 (c) ₹6160 (d) ₹6380
- 6.₹6500 is invested at 10% per year simple interest. What is the amount after 3 years? (a) ₹7150 (b) ₹8450 (c) ₹1950 (d) ₹9100
- 7.₹8500 is invested at 2% per year simple interest. What is the amount after 3 years? (a) ₹510 (b) ₹9180 (c) ₹8670 (d) ₹9010
- 8.The simple interest on ₹7500 for 2 years is ₹900. What is the rate per year? (a) 12% (b) 7% (c) 5% (d) 6%
- 9.What is the simple interest on ₹9500 at 11% per year for 2 years? (a) ₹1045 (b) ₹3135 (c) ₹11590 (d) ₹2090
- 10.In how many years will ₹7500 earn ₹1200 simple interest at 4% per year? (a) 4 years (b) 3 years (c) 5 years (d) 8 years
- 11.In how many years will ₹1500 earn ₹495 simple interest at 11% per year? (a) 2 years (b) 4 years (c) 3 years (d) 6 years
- 12.₹2500 is invested at 7% per year simple interest. What is the amount after 4 years? (a) ₹3200 (b) ₹700 (c) ₹3375 (d) ₹2675
- 13.In how many years will ₹9000 earn ₹810 simple interest at 3% per year? (a) 6 years (b) 3 years (c) 2 years (d) 4 years
- 14.In how many years will ₹8000 earn ₹1760 simple interest at 11% per year? (a) 1 year (b) 2 years (c) 3 years (d) 4 years
- 15.What is the simple interest on ₹9500 at 2% per year for 4 years? (a) ₹190 (b) ₹760 (c) ₹950 (d) ₹10260
- 16.₹2000 is invested at 3% per year simple interest. What is the amount after 5 years? (a) ₹2060 (b) ₹300 (c) ₹2360 (d) ₹2300
- 17.The simple interest on ₹1500 for 2 years is ₹90. What is the rate per year? (a) 4% (b) 3% (c) 2% (d) 6%
- 18.In how many years will ₹3500 earn ₹525 simple interest at 3% per year? (a) 6 years (b) 5 years (c) 10 years (d) 4 years
- 19.What is the simple interest on ₹8500 at 7% per year for 2 years? (a) ₹1785 (b) ₹9690 (c) ₹1190 (d) ₹595
- 20.In how many years will ₹9000 earn ₹4950 simple interest at 11% per year? (a) 4 years (b) 10 years (c) 5 years (d) 6 years
- 21.₹1000 is invested at 6% per year simple interest. What is the amount after 4 years? (a) ₹240 (b) ₹1240 (c) ₹1300 (d) ₹1060
- 22.In how many years will ₹3000 earn ₹1080 simple interest at 12% per year? (a) 2 years (b) 4 years (c) 6 years (d) 3 years
- 23.In how many years will ₹4500 earn ₹270 simple interest at 3% per year? (a) 2 years (b) 3 years (c) 4 years (d) 1 year
- 24.The simple interest on ₹7500 for 3 years is ₹1125. What is the rate per year? (a) 15% (b) 6% (c) 4% (d) 5%
- 25.What is the simple interest on ₹3000 at 9% per year for 3 years? (a) ₹3810 (b) ₹810 (c) ₹270 (d) ₹1080
- 26.In how many years will ₹9000 earn ₹2160 simple interest at 12% per year? (a) 1 year (b) 2 years (c) 4 years (d) 3 years
- 27.What is the simple interest on ₹8000 at 9% per year for 2 years? (a) ₹2160 (b) ₹1440 (c) ₹9440 (d) ₹720
- 28.What is the simple interest on ₹4000 at 10% per year for 4 years? (a) ₹1600 (b) ₹2000 (c) ₹400 (d) ₹5600
- 29.The simple interest on ₹8000 for 5 years is ₹4800. What is the rate per year? (a) 12% (b) 11% (c) 13% (d) 60%
- 30.₹5500 is invested at 8% per year simple interest. What is the amount after 3 years? (a) ₹5940 (b) ₹6820 (c) ₹7260 (d) ₹1320
- 31.In how many years will ₹5000 earn ₹900 simple interest at 6% per year? (a) 2 years (b) 4 years (c) 6 years (d) 3 years
- 32.₹6500 is invested at 9% per year simple interest. What is the amount after 4 years? (a) ₹2340 (b) ₹8840 (c) ₹9425 (d) ₹7085
- 33.What is the simple interest on ₹6000 at 6% per year for 5 years? (a) ₹7800 (b) ₹1800 (c) ₹360 (d) ₹2160
- 34.What is the simple interest on ₹1500 at 12% per year for 5 years? (a) ₹1080 (b) ₹900 (c) ₹2400 (d) ₹180
- 35.In how many years will ₹5500 earn ₹660 simple interest at 4% per year? (a) 6 years (b) 3 years (c) 2 years (d) 4 years
- 36.What is the simple interest on ₹3500 at 7% per year for 2 years? (a) ₹3990 (b) ₹735 (c) ₹245 (d) ₹490
- 37.₹7500 is invested at 12% per year simple interest. What is the amount after 2 years? (a) ₹1800 (b) ₹9300 (c) ₹10200 (d) ₹8400
- 38.₹1000 is invested at 11% per year simple interest. What is the amount after 2 years? (a) ₹1330 (b) ₹1220 (c) ₹220 (d) ₹1110
- 39.In how many years will ₹8500 earn ₹3060 simple interest at 12% per year? (a) 2 years (b) 4 years (c) 6 years (d) 3 years
- 40.₹10000 is invested at 3% per year simple interest. What is the amount after 3 years? (a) ₹900 (b) ₹11200 (c) ₹10300 (d) ₹10900
Answer key
- 4 years
- ₹1560
- ₹4480
- 12%
- ₹6160
- ₹8450
- ₹9010
- 6%
- ₹2090
- 4 years
- 3 years
- ₹3200
- 3 years
- 2 years
- ₹760
- ₹2300
- 3%
- 5 years
- ₹1190
- 5 years
- ₹1240
- 3 years
- 2 years
- 5%
- ₹810
- 2 years
- ₹1440
- ₹1600
- 12%
- ₹6820
- 3 years
- ₹8840
- ₹1800
- ₹900
- 3 years
- ₹490
- ₹9300
- ₹1220
- 3 years
- ₹10900
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