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 ₹5500 earn ₹1320 simple interest at 8% per year? (a) 2 years (b) 6 years (c) 4 years (d) 3 years
- 2.What is the simple interest on ₹10000 at 12% per year for 5 years? (a) ₹1200 (b) ₹6000 (c) ₹16000 (d) ₹7200
- 3.₹4500 is invested at 5% per year simple interest. What is the amount after 2 years? (a) ₹4950 (b) ₹4725 (c) ₹450 (d) ₹5175
- 4.What is the simple interest on ₹8500 at 4% per year for 3 years? (a) ₹340 (b) ₹9520 (c) ₹1020 (d) ₹1360
- 5.What is the simple interest on ₹3500 at 5% per year for 3 years? (a) ₹700 (b) ₹4025 (c) ₹175 (d) ₹525
- 6.₹2000 is invested at 5% per year simple interest. What is the amount after 5 years? (a) ₹2100 (b) ₹2600 (c) ₹2500 (d) ₹500
- 7.In how many years will ₹3500 earn ₹280 simple interest at 4% per year? (a) 2 years (b) 4 years (c) 3 years (d) 1 year
- 8.₹10000 is invested at 4% per year simple interest. What is the amount after 3 years? (a) ₹10400 (b) ₹1200 (c) ₹11600 (d) ₹11200
- 9.What is the simple interest on ₹5500 at 5% per year for 5 years? (a) ₹6875 (b) ₹275 (c) ₹1375 (d) ₹1650
- 10.What is the simple interest on ₹2000 at 12% per year for 3 years? (a) ₹240 (b) ₹720 (c) ₹960 (d) ₹2720
- 11.The simple interest on ₹1500 for 4 years is ₹420. What is the rate per year? (a) 28% (b) 7% (c) 8% (d) 6%
- 12.What is the simple interest on ₹1000 at 3% per year for 2 years? (a) ₹90 (b) ₹60 (c) ₹1060 (d) ₹30
- 13.What is the simple interest on ₹3500 at 10% per year for 4 years? (a) ₹1400 (b) ₹1750 (c) ₹4900 (d) ₹350
- 14.The simple interest on ₹1500 for 5 years is ₹300. What is the rate per year? (a) 20% (b) 5% (c) 3% (d) 4%
- 15.In how many years will ₹2000 earn ₹640 simple interest at 8% per year? (a) 8 years (b) 5 years (c) 3 years (d) 4 years
- 16.In how many years will ₹6500 earn ₹1365 simple interest at 7% per year? (a) 3 years (b) 4 years (c) 6 years (d) 2 years
- 17.In how many years will ₹5000 earn ₹400 simple interest at 2% per year? (a) 3 years (b) 4 years (c) 8 years (d) 5 years
- 18.What is the simple interest on ₹5000 at 9% per year for 3 years? (a) ₹450 (b) ₹6350 (c) ₹1800 (d) ₹1350
- 19.What is the simple interest on ₹2500 at 9% per year for 3 years? (a) ₹225 (b) ₹900 (c) ₹675 (d) ₹3175
- 20.In how many years will ₹5000 earn ₹2000 simple interest at 10% per year? (a) 8 years (b) 3 years (c) 4 years (d) 5 years
- 21.In how many years will ₹1000 earn ₹220 simple interest at 11% per year? (a) 3 years (b) 2 years (c) 4 years (d) 1 year
- 22.What is the simple interest on ₹5000 at 6% per year for 2 years? (a) ₹900 (b) ₹600 (c) ₹5600 (d) ₹300
- 23.The simple interest on ₹7000 for 2 years is ₹1400. What is the rate per year? (a) 11% (b) 10% (c) 9% (d) 20%
- 24.₹3500 is invested at 2% per year simple interest. What is the amount after 4 years? (a) ₹3850 (b) ₹3570 (c) ₹3780 (d) ₹280
- 25.In how many years will ₹7000 earn ₹1400 simple interest at 10% per year? (a) 1 year (b) 3 years (c) 4 years (d) 2 years
- 26.What is the simple interest on ₹8500 at 10% per year for 2 years? (a) ₹10200 (b) ₹850 (c) ₹2550 (d) ₹1700
- 27.In how many years will ₹2500 earn ₹500 simple interest at 10% per year? (a) 4 years (b) 3 years (c) 1 year (d) 2 years
- 28.What is the simple interest on ₹1500 at 11% per year for 2 years? (a) ₹1830 (b) ₹165 (c) ₹330 (d) ₹495
- 29.What is the simple interest on ₹2000 at 3% per year for 2 years? (a) ₹180 (b) ₹120 (c) ₹60 (d) ₹2120
- 30.The simple interest on ₹6500 for 2 years is ₹520. What is the rate per year? (a) 5% (b) 8% (c) 3% (d) 4%
- 31.₹2500 is invested at 10% per year simple interest. What is the amount after 2 years? (a) ₹500 (b) ₹3000 (c) ₹2750 (d) ₹3250
- 32.What is the simple interest on ₹9000 at 4% per year for 3 years? (a) ₹360 (b) ₹1080 (c) ₹10080 (d) ₹1440
- 33.₹2500 is invested at 9% per year simple interest. What is the amount after 5 years? (a) ₹3625 (b) ₹2725 (c) ₹3850 (d) ₹1125
- 34.₹6000 is invested at 11% per year simple interest. What is the amount after 2 years? (a) ₹6660 (b) ₹7980 (c) ₹1320 (d) ₹7320
- 35.₹1500 is invested at 5% per year simple interest. What is the amount after 2 years? (a) ₹1575 (b) ₹150 (c) ₹1725 (d) ₹1650
- 36.The simple interest on ₹7500 for 3 years is ₹2025. What is the rate per year? (a) 10% (b) 8% (c) 9% (d) 27%
- 37.In how many years will ₹3000 earn ₹1350 simple interest at 9% per year? (a) 5 years (b) 6 years (c) 4 years (d) 10 years
- 38.What is the simple interest on ₹4500 at 4% per year for 5 years? (a) ₹900 (b) ₹1080 (c) ₹180 (d) ₹5400
- 39.The simple interest on ₹4000 for 4 years is ₹1600. What is the rate per year? (a) 40% (b) 11% (c) 9% (d) 10%
- 40.What is the simple interest on ₹9000 at 3% per year for 4 years? (a) ₹270 (b) ₹1080 (c) ₹10080 (d) ₹1350
Answer key
- 3 years
- ₹6000
- ₹4950
- ₹1020
- ₹525
- ₹2500
- 2 years
- ₹11200
- ₹1375
- ₹720
- 7%
- ₹60
- ₹1400
- 4%
- 4 years
- 3 years
- 4 years
- ₹1350
- ₹675
- 4 years
- 2 years
- ₹600
- 10%
- ₹3780
- 2 years
- ₹1700
- 2 years
- ₹330
- ₹120
- 4%
- ₹3000
- ₹1080
- ₹3625
- ₹7320
- ₹1650
- 9%
- 5 years
- ₹900
- 10%
- ₹1080
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