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.₹1500 is invested at 2% per year simple interest. What is the amount after 3 years? (a) ₹90 (b) ₹1620 (c) ₹1530 (d) ₹1590
- 2.The simple interest on ₹1500 for 5 years is ₹900. What is the rate per year? (a) 13% (b) 11% (c) 12% (d) 60%
- 3.In how many years will ₹5500 earn ₹1320 simple interest at 6% per year? (a) 8 years (b) 3 years (c) 5 years (d) 4 years
- 4.The simple interest on ₹5000 for 3 years is ₹600. What is the rate per year? (a) 3% (b) 5% (c) 12% (d) 4%
- 5.The simple interest on ₹6000 for 2 years is ₹720. What is the rate per year? (a) 6% (b) 5% (c) 12% (d) 7%
- 6.In how many years will ₹7000 earn ₹1400 simple interest at 5% per year? (a) 5 years (b) 8 years (c) 4 years (d) 3 years
- 7.What is the simple interest on ₹9000 at 9% per year for 4 years? (a) ₹3240 (b) ₹12240 (c) ₹810 (d) ₹4050
- 8.The simple interest on ₹3500 for 3 years is ₹1050. What is the rate per year? (a) 10% (b) 9% (c) 30% (d) 11%
- 9.The simple interest on ₹9500 for 5 years is ₹1900. What is the rate per year? (a) 5% (b) 3% (c) 4% (d) 20%
- 10.In how many years will ₹9500 earn ₹2280 simple interest at 12% per year? (a) 4 years (b) 1 year (c) 2 years (d) 3 years
- 11.In how many years will ₹7000 earn ₹2450 simple interest at 7% per year? (a) 5 years (b) 4 years (c) 10 years (d) 6 years
- 12.In how many years will ₹6500 earn ₹1560 simple interest at 12% per year? (a) 2 years (b) 4 years (c) 3 years (d) 1 year
- 13.In how many years will ₹8500 earn ₹1020 simple interest at 6% per year? (a) 3 years (b) 1 year (c) 2 years (d) 4 years
- 14.₹3000 is invested at 3% per year simple interest. What is the amount after 3 years? (a) ₹3360 (b) ₹3270 (c) ₹270 (d) ₹3090
- 15.What is the simple interest on ₹8000 at 7% per year for 5 years? (a) ₹3360 (b) ₹560 (c) ₹2800 (d) ₹10800
- 16.₹3000 is invested at 4% per year simple interest. What is the amount after 5 years? (a) ₹600 (b) ₹3120 (c) ₹3600 (d) ₹3720
- 17.What is the simple interest on ₹4500 at 10% per year for 4 years? (a) ₹6300 (b) ₹450 (c) ₹2250 (d) ₹1800
- 18.What is the simple interest on ₹5000 at 2% per year for 3 years? (a) ₹400 (b) ₹5300 (c) ₹300 (d) ₹100
- 19.What is the simple interest on ₹6000 at 9% per year for 3 years? (a) ₹540 (b) ₹2160 (c) ₹1620 (d) ₹7620
- 20.In how many years will ₹3500 earn ₹1155 simple interest at 11% per year? (a) 4 years (b) 6 years (c) 2 years (d) 3 years
- 21.The simple interest on ₹5000 for 3 years is ₹900. What is the rate per year? (a) 6% (b) 18% (c) 5% (d) 7%
- 22.What is the simple interest on ₹10000 at 8% per year for 4 years? (a) ₹13200 (b) ₹3200 (c) ₹4000 (d) ₹800
- 23.The simple interest on ₹4000 for 5 years is ₹1200. What is the rate per year? (a) 7% (b) 6% (c) 30% (d) 5%
- 24.What is the simple interest on ₹4000 at 12% per year for 2 years? (a) ₹4960 (b) ₹960 (c) ₹1440 (d) ₹480
- 25.The simple interest on ₹2000 for 3 years is ₹540. What is the rate per year? (a) 8% (b) 27% (c) 9% (d) 10%
- 26.What is the simple interest on ₹4500 at 8% per year for 2 years? (a) ₹360 (b) ₹720 (c) ₹5220 (d) ₹1080
- 27.₹1000 is invested at 5% per year simple interest. What is the amount after 5 years? (a) ₹1250 (b) ₹1050 (c) ₹250 (d) ₹1300
- 28.₹9000 is invested at 2% per year simple interest. What is the amount after 5 years? (a) ₹9900 (b) ₹900 (c) ₹9180 (d) ₹10080
- 29.₹2000 is invested at 5% per year simple interest. What is the amount after 3 years? (a) ₹2100 (b) ₹2400 (c) ₹2300 (d) ₹300
- 30.₹7000 is invested at 5% per year simple interest. What is the amount after 5 years? (a) ₹1750 (b) ₹9100 (c) ₹8750 (d) ₹7350
- 31.₹7000 is invested at 12% per year simple interest. What is the amount after 5 years? (a) ₹7840 (b) ₹12040 (c) ₹11200 (d) ₹4200
- 32.What is the simple interest on ₹8000 at 5% per year for 5 years? (a) ₹400 (b) ₹10000 (c) ₹2400 (d) ₹2000
- 33.What is the simple interest on ₹8500 at 8% per year for 2 years? (a) ₹2040 (b) ₹9860 (c) ₹680 (d) ₹1360
- 34.₹5000 is invested at 2% per year simple interest. What is the amount after 4 years? (a) ₹5100 (b) ₹400 (c) ₹5400 (d) ₹5500
- 35.What is the simple interest on ₹9500 at 7% per year for 5 years? (a) ₹12825 (b) ₹665 (c) ₹3325 (d) ₹3990
- 36.The simple interest on ₹5000 for 4 years is ₹1200. What is the rate per year? (a) 24% (b) 6% (c) 7% (d) 5%
- 37.In how many years will ₹1500 earn ₹330 simple interest at 11% per year? (a) 3 years (b) 2 years (c) 1 year (d) 4 years
- 38.What is the simple interest on ₹1500 at 8% per year for 3 years? (a) ₹480 (b) ₹1860 (c) ₹360 (d) ₹120
- 39.₹1000 is invested at 12% per year simple interest. What is the amount after 2 years? (a) ₹1360 (b) ₹240 (c) ₹1240 (d) ₹1120
- 40.In how many years will ₹1000 earn ₹220 simple interest at 11% per year? (a) 2 years (b) 4 years (c) 3 years (d) 1 year
Answer key
- ₹1590
- 12%
- 4 years
- 4%
- 6%
- 4 years
- ₹3240
- 10%
- 4%
- 2 years
- 5 years
- 2 years
- 2 years
- ₹3270
- ₹2800
- ₹3600
- ₹1800
- ₹300
- ₹1620
- 3 years
- 6%
- ₹3200
- 6%
- ₹960
- 9%
- ₹720
- ₹1250
- ₹9900
- ₹2300
- ₹8750
- ₹11200
- ₹2000
- ₹1360
- ₹5400
- ₹3325
- 6%
- 2 years
- ₹360
- ₹1240
- 2 years
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