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 ₹4000 earn ₹480 simple interest at 6% per year? (a) 4 years (b) 3 years (c) 1 year (d) 2 years
- 2.The simple interest on ₹5500 for 2 years is ₹220. What is the rate per year? (a) 3% (b) 1% (c) 2% (d) 4%
- 3.In how many years will ₹4500 earn ₹1440 simple interest at 8% per year? (a) 3 years (b) 4 years (c) 8 years (d) 5 years
- 4.The simple interest on ₹2500 for 3 years is ₹600. What is the rate per year? (a) 8% (b) 24% (c) 7% (d) 9%
- 5.What is the simple interest on ₹4500 at 7% per year for 5 years? (a) ₹1890 (b) ₹315 (c) ₹1575 (d) ₹6075
- 6.In how many years will ₹9500 earn ₹4750 simple interest at 10% per year? (a) 6 years (b) 5 years (c) 4 years (d) 10 years
- 7.₹9500 is invested at 5% per year simple interest. What is the amount after 3 years? (a) ₹10925 (b) ₹9975 (c) ₹1425 (d) ₹11400
- 8.₹7500 is invested at 10% per year simple interest. What is the amount after 5 years? (a) ₹11250 (b) ₹3750 (c) ₹8250 (d) ₹12000
- 9.In how many years will ₹1500 earn ₹120 simple interest at 2% per year? (a) 8 years (b) 3 years (c) 4 years (d) 5 years
- 10.What is the simple interest on ₹5000 at 8% per year for 5 years? (a) ₹2000 (b) ₹2400 (c) ₹7000 (d) ₹400
- 11.What is the simple interest on ₹9500 at 6% per year for 3 years? (a) ₹2280 (b) ₹11210 (c) ₹1710 (d) ₹570
- 12.The simple interest on ₹7000 for 2 years is ₹560. What is the rate per year? (a) 8% (b) 4% (c) 5% (d) 3%
- 13.The simple interest on ₹5500 for 4 years is ₹1320. What is the rate per year? (a) 7% (b) 24% (c) 5% (d) 6%
- 14.₹2500 is invested at 10% per year simple interest. What is the amount after 5 years? (a) ₹2750 (b) ₹4000 (c) ₹3750 (d) ₹1250
- 15.What is the simple interest on ₹6500 at 11% per year for 4 years? (a) ₹715 (b) ₹9360 (c) ₹3575 (d) ₹2860
- 16.What is the simple interest on ₹5000 at 4% per year for 3 years? (a) ₹200 (b) ₹600 (c) ₹800 (d) ₹5600
- 17.In how many years will ₹5000 earn ₹1800 simple interest at 9% per year? (a) 8 years (b) 3 years (c) 4 years (d) 5 years
- 18.What is the simple interest on ₹4500 at 3% per year for 4 years? (a) ₹135 (b) ₹5040 (c) ₹540 (d) ₹675
- 19.In how many years will ₹2500 earn ₹100 simple interest at 2% per year? (a) 3 years (b) 4 years (c) 2 years (d) 1 year
- 20.The simple interest on ₹4000 for 3 years is ₹480. What is the rate per year? (a) 5% (b) 12% (c) 4% (d) 3%
- 21.The simple interest on ₹1500 for 5 years is ₹675. What is the rate per year? (a) 45% (b) 8% (c) 9% (d) 10%
- 22.What is the simple interest on ₹1500 at 2% per year for 3 years? (a) ₹30 (b) ₹1590 (c) ₹120 (d) ₹90
- 23.₹1500 is invested at 6% per year simple interest. What is the amount after 5 years? (a) ₹1950 (b) ₹1590 (c) ₹2040 (d) ₹450
- 24.What is the simple interest on ₹2000 at 5% per year for 2 years? (a) ₹100 (b) ₹300 (c) ₹2200 (d) ₹200
- 25.What is the simple interest on ₹4500 at 3% per year for 5 years? (a) ₹810 (b) ₹135 (c) ₹5175 (d) ₹675
- 26.What is the simple interest on ₹3500 at 10% per year for 4 years? (a) ₹1750 (b) ₹1400 (c) ₹350 (d) ₹4900
- 27.The simple interest on ₹3000 for 2 years is ₹600. What is the rate per year? (a) 20% (b) 9% (c) 10% (d) 11%
- 28.The simple interest on ₹5500 for 5 years is ₹2200. What is the rate per year? (a) 9% (b) 40% (c) 7% (d) 8%
- 29.₹8000 is invested at 12% per year simple interest. What is the amount after 2 years? (a) ₹10880 (b) ₹9920 (c) ₹8960 (d) ₹1920
- 30.₹3500 is invested at 5% per year simple interest. What is the amount after 4 years? (a) ₹700 (b) ₹3675 (c) ₹4200 (d) ₹4375
- 31.₹4500 is invested at 12% per year simple interest. What is the amount after 3 years? (a) ₹6660 (b) ₹6120 (c) ₹5040 (d) ₹1620
- 32.₹3000 is invested at 6% per year simple interest. What is the amount after 2 years? (a) ₹3540 (b) ₹3180 (c) ₹3360 (d) ₹360
- 33.The simple interest on ₹2500 for 4 years is ₹1000. What is the rate per year? (a) 11% (b) 40% (c) 10% (d) 9%
- 34.What is the simple interest on ₹5500 at 5% per year for 4 years? (a) ₹1375 (b) ₹1100 (c) ₹6600 (d) ₹275
- 35.₹9500 is invested at 8% per year simple interest. What is the amount after 5 years? (a) ₹14060 (b) ₹3800 (c) ₹10260 (d) ₹13300
- 36.In how many years will ₹2000 earn ₹660 simple interest at 11% per year? (a) 6 years (b) 3 years (c) 2 years (d) 4 years
- 37.What is the simple interest on ₹1500 at 8% per year for 2 years? (a) ₹240 (b) ₹360 (c) ₹1740 (d) ₹120
- 38.In how many years will ₹5000 earn ₹600 simple interest at 4% per year? (a) 6 years (b) 3 years (c) 4 years (d) 2 years
- 39.₹3000 is invested at 3% per year simple interest. What is the amount after 4 years? (a) ₹3450 (b) ₹360 (c) ₹3090 (d) ₹3360
- 40.The simple interest on ₹3500 for 2 years is ₹210. What is the rate per year? (a) 4% (b) 6% (c) 2% (d) 3%
Answer key
- 2 years
- 2%
- 4 years
- 8%
- ₹1575
- 5 years
- ₹10925
- ₹11250
- 4 years
- ₹2000
- ₹1710
- 4%
- 6%
- ₹3750
- ₹2860
- ₹600
- 4 years
- ₹540
- 2 years
- 4%
- 9%
- ₹90
- ₹1950
- ₹200
- ₹675
- ₹1400
- 10%
- 8%
- ₹9920
- ₹4200
- ₹6120
- ₹3360
- 10%
- ₹1100
- ₹13300
- 3 years
- ₹240
- 3 years
- ₹3360
- 3%
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