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.What is the simple interest on ₹7500 at 6% per year for 5 years? (a) ₹2250 (b) ₹2700 (c) ₹9750 (d) ₹450
- 2.What is the simple interest on ₹4500 at 2% per year for 4 years? (a) ₹4860 (b) ₹90 (c) ₹450 (d) ₹360
- 3.What is the simple interest on ₹10000 at 12% per year for 2 years? (a) ₹2400 (b) ₹1200 (c) ₹3600 (d) ₹12400
- 4.The simple interest on ₹1500 for 3 years is ₹495. What is the rate per year? (a) 11% (b) 33% (c) 12% (d) 10%
- 5.The simple interest on ₹3000 for 2 years is ₹420. What is the rate per year? (a) 6% (b) 8% (c) 7% (d) 14%
- 6.The simple interest on ₹9000 for 5 years is ₹900. What is the rate per year? (a) 3% (b) 10% (c) 2% (d) 1%
- 7.What is the simple interest on ₹9000 at 5% per year for 3 years? (a) ₹450 (b) ₹10350 (c) ₹1800 (d) ₹1350
- 8.What is the simple interest on ₹7500 at 4% per year for 2 years? (a) ₹300 (b) ₹8100 (c) ₹600 (d) ₹900
- 9.In how many years will ₹4000 earn ₹640 simple interest at 4% per year? (a) 3 years (b) 8 years (c) 5 years (d) 4 years
- 10.₹4000 is invested at 4% per year simple interest. What is the amount after 5 years? (a) ₹4800 (b) ₹4960 (c) ₹4160 (d) ₹800
- 11.What is the simple interest on ₹7000 at 7% per year for 3 years? (a) ₹1470 (b) ₹490 (c) ₹1960 (d) ₹8470
- 12.₹5500 is invested at 8% per year simple interest. What is the amount after 4 years? (a) ₹7700 (b) ₹1760 (c) ₹7260 (d) ₹5940
- 13.₹4000 is invested at 12% per year simple interest. What is the amount after 5 years? (a) ₹2400 (b) ₹6880 (c) ₹6400 (d) ₹4480
- 14.What is the simple interest on ₹4000 at 10% per year for 4 years? (a) ₹5600 (b) ₹1600 (c) ₹2000 (d) ₹400
- 15.₹7000 is invested at 9% per year simple interest. What is the amount after 4 years? (a) ₹9520 (b) ₹10150 (c) ₹7630 (d) ₹2520
- 16.The simple interest on ₹3000 for 4 years is ₹720. What is the rate per year? (a) 7% (b) 5% (c) 6% (d) 24%
- 17.In how many years will ₹6000 earn ₹3300 simple interest at 11% per year? (a) 10 years (b) 4 years (c) 5 years (d) 6 years
- 18.₹10000 is invested at 5% per year simple interest. What is the amount after 3 years? (a) ₹1500 (b) ₹12000 (c) ₹10500 (d) ₹11500
- 19.The simple interest on ₹3000 for 4 years is ₹1080. What is the rate per year? (a) 8% (b) 10% (c) 9% (d) 36%
- 20.In how many years will ₹3000 earn ₹840 simple interest at 7% per year? (a) 4 years (b) 5 years (c) 3 years (d) 8 years
- 21.What is the simple interest on ₹8000 at 11% per year for 5 years? (a) ₹5280 (b) ₹4400 (c) ₹880 (d) ₹12400
- 22.₹5000 is invested at 6% per year simple interest. What is the amount after 2 years? (a) ₹5600 (b) ₹5300 (c) ₹600 (d) ₹5900
- 23.₹2000 is invested at 5% per year simple interest. What is the amount after 5 years? (a) ₹2100 (b) ₹2600 (c) ₹500 (d) ₹2500
- 24.What is the simple interest on ₹1000 at 4% per year for 4 years? (a) ₹1160 (b) ₹40 (c) ₹200 (d) ₹160
- 25.What is the simple interest on ₹1000 at 8% per year for 4 years? (a) ₹320 (b) ₹1320 (c) ₹400 (d) ₹80
- 26.In how many years will ₹2500 earn ₹500 simple interest at 4% per year? (a) 5 years (b) 6 years (c) 4 years (d) 10 years
- 27.In how many years will ₹8500 earn ₹2550 simple interest at 6% per year? (a) 6 years (b) 4 years (c) 10 years (d) 5 years
- 28.In how many years will ₹4500 earn ₹540 simple interest at 4% per year? (a) 4 years (b) 2 years (c) 3 years (d) 6 years
- 29.In how many years will ₹2000 earn ₹900 simple interest at 9% per year? (a) 6 years (b) 4 years (c) 10 years (d) 5 years
- 30.₹4000 is invested at 5% per year simple interest. What is the amount after 3 years? (a) ₹4600 (b) ₹4800 (c) ₹600 (d) ₹4200
- 31.What is the simple interest on ₹8500 at 11% per year for 4 years? (a) ₹4675 (b) ₹3740 (c) ₹12240 (d) ₹935
- 32.₹3500 is invested at 8% per year simple interest. What is the amount after 2 years? (a) ₹4060 (b) ₹4340 (c) ₹560 (d) ₹3780
- 33.The simple interest on ₹7500 for 3 years is ₹1800. What is the rate per year? (a) 24% (b) 7% (c) 8% (d) 9%
- 34.₹8000 is invested at 6% per year simple interest. What is the amount after 5 years? (a) ₹2400 (b) ₹10880 (c) ₹10400 (d) ₹8480
- 35.In how many years will ₹9000 earn ₹1620 simple interest at 9% per year? (a) 1 year (b) 3 years (c) 4 years (d) 2 years
- 36.The simple interest on ₹5000 for 4 years is ₹1800. What is the rate per year? (a) 8% (b) 36% (c) 9% (d) 10%
- 37.The simple interest on ₹2000 for 5 years is ₹600. What is the rate per year? (a) 5% (b) 7% (c) 6% (d) 30%
- 38.In how many years will ₹1000 earn ₹400 simple interest at 8% per year? (a) 4 years (b) 5 years (c) 6 years (d) 10 years
- 39.The simple interest on ₹8500 for 4 years is ₹3740. What is the rate per year? (a) 12% (b) 44% (c) 10% (d) 11%
- 40.The simple interest on ₹3500 for 2 years is ₹210. What is the rate per year? (a) 6% (b) 4% (c) 3% (d) 2%
Answer key
- ₹2250
- ₹360
- ₹2400
- 11%
- 7%
- 2%
- ₹1350
- ₹600
- 4 years
- ₹4800
- ₹1470
- ₹7260
- ₹6400
- ₹1600
- ₹9520
- 6%
- 5 years
- ₹11500
- 9%
- 4 years
- ₹4400
- ₹5600
- ₹2500
- ₹160
- ₹320
- 5 years
- 5 years
- 3 years
- 5 years
- ₹4600
- ₹3740
- ₹4060
- 8%
- ₹10400
- 2 years
- 9%
- 6%
- 5 years
- 11%
- 3%
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