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 ₹4500 earn ₹540 simple interest at 4% per year? (a) 4 years (b) 3 years (c) 6 years (d) 2 years
- 2.In how many years will ₹1000 earn ₹60 simple interest at 2% per year? (a) 4 years (b) 6 years (c) 2 years (d) 3 years
- 3.What is the simple interest on ₹2000 at 8% per year for 2 years? (a) ₹160 (b) ₹480 (c) ₹2320 (d) ₹320
- 4.In how many years will ₹5000 earn ₹1350 simple interest at 9% per year? (a) 6 years (b) 4 years (c) 3 years (d) 2 years
- 5.The simple interest on ₹9500 for 4 years is ₹4560. What is the rate per year? (a) 11% (b) 13% (c) 48% (d) 12%
- 6.The simple interest on ₹7000 for 2 years is ₹280. What is the rate per year? (a) 2% (b) 1% (c) 4% (d) 3%
- 7.What is the simple interest on ₹2000 at 5% per year for 2 years? (a) ₹300 (b) ₹200 (c) ₹2200 (d) ₹100
- 8.In how many years will ₹6500 earn ₹1560 simple interest at 6% per year? (a) 8 years (b) 4 years (c) 3 years (d) 5 years
- 9.In how many years will ₹1000 earn ₹280 simple interest at 7% per year? (a) 5 years (b) 3 years (c) 8 years (d) 4 years
- 10.The simple interest on ₹6500 for 4 years is ₹2860. What is the rate per year? (a) 11% (b) 12% (c) 10% (d) 44%
- 11.The simple interest on ₹1000 for 4 years is ₹440. What is the rate per year? (a) 44% (b) 11% (c) 12% (d) 10%
- 12.₹10000 is invested at 9% per year simple interest. What is the amount after 2 years? (a) ₹1800 (b) ₹10900 (c) ₹11800 (d) ₹12700
- 13.What is the simple interest on ₹2000 at 11% per year for 5 years? (a) ₹1100 (b) ₹220 (c) ₹3100 (d) ₹1320
- 14.₹10000 is invested at 5% per year simple interest. What is the amount after 5 years? (a) ₹13000 (b) ₹12500 (c) ₹10500 (d) ₹2500
- 15.What is the simple interest on ₹1000 at 5% per year for 4 years? (a) ₹50 (b) ₹1200 (c) ₹250 (d) ₹200
- 16.₹1000 is invested at 8% per year simple interest. What is the amount after 5 years? (a) ₹1400 (b) ₹1480 (c) ₹1080 (d) ₹400
- 17.The simple interest on ₹9000 for 2 years is ₹2160. What is the rate per year? (a) 13% (b) 12% (c) 11% (d) 24%
- 18.The simple interest on ₹6000 for 5 years is ₹600. What is the rate per year? (a) 10% (b) 1% (c) 2% (d) 3%
- 19.What is the simple interest on ₹6500 at 9% per year for 5 years? (a) ₹2925 (b) ₹9425 (c) ₹3510 (d) ₹585
- 20.₹2500 is invested at 3% per year simple interest. What is the amount after 2 years? (a) ₹2725 (b) ₹150 (c) ₹2575 (d) ₹2650
- 21.What is the simple interest on ₹4500 at 3% per year for 2 years? (a) ₹270 (b) ₹4770 (c) ₹135 (d) ₹405
- 22.In how many years will ₹2000 earn ₹360 simple interest at 6% per year? (a) 4 years (b) 6 years (c) 2 years (d) 3 years
- 23.The simple interest on ₹10000 for 5 years is ₹4000. What is the rate per year? (a) 8% (b) 9% (c) 7% (d) 40%
- 24.In how many years will ₹7500 earn ₹2625 simple interest at 7% per year? (a) 10 years (b) 5 years (c) 6 years (d) 4 years
- 25.What is the simple interest on ₹4000 at 4% per year for 4 years? (a) ₹160 (b) ₹800 (c) ₹4640 (d) ₹640
- 26.₹4000 is invested at 9% per year simple interest. What is the amount after 5 years? (a) ₹1800 (b) ₹4360 (c) ₹5800 (d) ₹6160
- 27.The simple interest on ₹3500 for 2 years is ₹280. What is the rate per year? (a) 8% (b) 4% (c) 5% (d) 3%
- 28.₹2000 is invested at 10% per year simple interest. What is the amount after 5 years? (a) ₹1000 (b) ₹3000 (c) ₹2200 (d) ₹3200
- 29.The simple interest on ₹3500 for 4 years is ₹980. What is the rate per year? (a) 28% (b) 8% (c) 6% (d) 7%
- 30.What is the simple interest on ₹2000 at 12% per year for 2 years? (a) ₹480 (b) ₹240 (c) ₹720 (d) ₹2480
- 31.In how many years will ₹7000 earn ₹840 simple interest at 6% per year? (a) 2 years (b) 1 year (c) 4 years (d) 3 years
- 32.In how many years will ₹5000 earn ₹300 simple interest at 3% per year? (a) 2 years (b) 4 years (c) 1 year (d) 3 years
- 33.What is the simple interest on ₹3000 at 6% per year for 3 years? (a) ₹720 (b) ₹180 (c) ₹3540 (d) ₹540
- 34.In how many years will ₹7000 earn ₹560 simple interest at 2% per year? (a) 4 years (b) 8 years (c) 3 years (d) 5 years
- 35.₹9000 is invested at 12% per year simple interest. What is the amount after 2 years? (a) ₹10080 (b) ₹2160 (c) ₹12240 (d) ₹11160
- 36.₹5500 is invested at 6% per year simple interest. What is the amount after 4 years? (a) ₹7150 (b) ₹5830 (c) ₹1320 (d) ₹6820
- 37.What is the simple interest on ₹3500 at 4% per year for 5 years? (a) ₹140 (b) ₹4200 (c) ₹700 (d) ₹840
- 38.₹10000 is invested at 3% per year simple interest. What is the amount after 4 years? (a) ₹11500 (b) ₹11200 (c) ₹10300 (d) ₹1200
- 39.What is the simple interest on ₹7000 at 11% per year for 3 years? (a) ₹770 (b) ₹2310 (c) ₹3080 (d) ₹9310
- 40.What is the simple interest on ₹6500 at 2% per year for 5 years? (a) ₹7150 (b) ₹780 (c) ₹650 (d) ₹130
Answer key
- 3 years
- 3 years
- ₹320
- 3 years
- 12%
- 2%
- ₹200
- 4 years
- 4 years
- 11%
- 11%
- ₹11800
- ₹1100
- ₹12500
- ₹200
- ₹1400
- 12%
- 2%
- ₹2925
- ₹2650
- ₹270
- 3 years
- 8%
- 5 years
- ₹640
- ₹5800
- 4%
- ₹3000
- 7%
- ₹480
- 2 years
- 2 years
- ₹540
- 4 years
- ₹11160
- ₹6820
- ₹700
- ₹11200
- ₹2310
- ₹650
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