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 ₹8500 earn ₹3060 simple interest at 9% per year? (a) 4 years (b) 5 years (c) 8 years (d) 3 years
- 2.What is the simple interest on ₹5500 at 11% per year for 5 years? (a) ₹3025 (b) ₹3630 (c) ₹605 (d) ₹8525
- 3.What is the simple interest on ₹5500 at 6% per year for 4 years? (a) ₹6820 (b) ₹1650 (c) ₹330 (d) ₹1320
- 4.₹1500 is invested at 10% per year simple interest. What is the amount after 4 years? (a) ₹600 (b) ₹2250 (c) ₹2100 (d) ₹1650
- 5.The simple interest on ₹2000 for 4 years is ₹320. What is the rate per year? (a) 16% (b) 5% (c) 3% (d) 4%
- 6.In how many years will ₹9500 earn ₹1710 simple interest at 6% per year? (a) 4 years (b) 3 years (c) 2 years (d) 6 years
- 7.₹1500 is invested at 7% per year simple interest. What is the amount after 2 years? (a) ₹1815 (b) ₹1605 (c) ₹1710 (d) ₹210
- 8.The simple interest on ₹3500 for 4 years is ₹1680. What is the rate per year? (a) 12% (b) 13% (c) 11% (d) 48%
- 9.What is the simple interest on ₹4500 at 8% per year for 5 years? (a) ₹1800 (b) ₹2160 (c) ₹6300 (d) ₹360
- 10.The simple interest on ₹5000 for 4 years is ₹800. What is the rate per year? (a) 3% (b) 4% (c) 5% (d) 16%
- 11.What is the simple interest on ₹1500 at 10% per year for 4 years? (a) ₹600 (b) ₹150 (c) ₹750 (d) ₹2100
- 12.In how many years will ₹3500 earn ₹140 simple interest at 2% per year? (a) 3 years (b) 4 years (c) 2 years (d) 1 year
- 13.What is the simple interest on ₹2500 at 5% per year for 2 years? (a) ₹125 (b) ₹2750 (c) ₹375 (d) ₹250
- 14.The simple interest on ₹3000 for 3 years is ₹1080. What is the rate per year? (a) 12% (b) 13% (c) 36% (d) 11%
- 15.What is the simple interest on ₹5000 at 7% per year for 3 years? (a) ₹1050 (b) ₹350 (c) ₹1400 (d) ₹6050
- 16.₹4000 is invested at 10% per year simple interest. What is the amount after 2 years? (a) ₹4800 (b) ₹800 (c) ₹4400 (d) ₹5200
- 17.What is the simple interest on ₹2000 at 7% per year for 5 years? (a) ₹140 (b) ₹700 (c) ₹840 (d) ₹2700
- 18.In how many years will ₹7000 earn ₹3080 simple interest at 11% per year? (a) 8 years (b) 4 years (c) 5 years (d) 3 years
- 19.What is the simple interest on ₹7000 at 5% per year for 3 years? (a) ₹1400 (b) ₹8050 (c) ₹350 (d) ₹1050
- 20.In how many years will ₹9500 earn ₹760 simple interest at 2% per year? (a) 4 years (b) 5 years (c) 3 years (d) 8 years
- 21.In how many years will ₹2000 earn ₹240 simple interest at 6% per year? (a) 2 years (b) 1 year (c) 3 years (d) 4 years
- 22.What is the simple interest on ₹1500 at 11% per year for 2 years? (a) ₹495 (b) ₹1830 (c) ₹330 (d) ₹165
- 23.The simple interest on ₹10000 for 3 years is ₹2700. What is the rate per year? (a) 27% (b) 9% (c) 8% (d) 10%
- 24.The simple interest on ₹6000 for 3 years is ₹900. What is the rate per year? (a) 5% (b) 15% (c) 4% (d) 6%
- 25.The simple interest on ₹7000 for 4 years is ₹3360. What is the rate per year? (a) 12% (b) 11% (c) 48% (d) 13%
- 26.₹2500 is invested at 2% per year simple interest. What is the amount after 4 years? (a) ₹2550 (b) ₹200 (c) ₹2750 (d) ₹2700
- 27.What is the simple interest on ₹3000 at 5% per year for 3 years? (a) ₹3450 (b) ₹600 (c) ₹450 (d) ₹150
- 28.What is the simple interest on ₹1000 at 2% per year for 4 years? (a) ₹20 (b) ₹1080 (c) ₹100 (d) ₹80
- 29.₹9000 is invested at 5% per year simple interest. What is the amount after 2 years? (a) ₹10350 (b) ₹9900 (c) ₹9450 (d) ₹900
- 30.The simple interest on ₹7500 for 2 years is ₹1500. What is the rate per year? (a) 9% (b) 11% (c) 10% (d) 20%
- 31.What is the simple interest on ₹8500 at 7% per year for 3 years? (a) ₹1785 (b) ₹595 (c) ₹10285 (d) ₹2380
- 32.₹9500 is invested at 3% per year simple interest. What is the amount after 3 years? (a) ₹10640 (b) ₹855 (c) ₹9785 (d) ₹10355
- 33.₹1000 is invested at 9% per year simple interest. What is the amount after 5 years? (a) ₹1090 (b) ₹1450 (c) ₹1540 (d) ₹450
- 34.In how many years will ₹9000 earn ₹2970 simple interest at 11% per year? (a) 4 years (b) 6 years (c) 2 years (d) 3 years
- 35.The simple interest on ₹7000 for 2 years is ₹560. What is the rate per year? (a) 5% (b) 4% (c) 3% (d) 8%
- 36.In how many years will ₹5500 earn ₹1320 simple interest at 6% per year? (a) 8 years (b) 4 years (c) 5 years (d) 3 years
- 37.What is the simple interest on ₹2500 at 2% per year for 2 years? (a) ₹2600 (b) ₹150 (c) ₹50 (d) ₹100
- 38.What is the simple interest on ₹1500 at 3% per year for 3 years? (a) ₹1635 (b) ₹135 (c) ₹45 (d) ₹180
- 39.The simple interest on ₹9000 for 2 years is ₹1440. What is the rate per year? (a) 7% (b) 16% (c) 8% (d) 9%
- 40.₹9000 is invested at 5% per year simple interest. What is the amount after 3 years? (a) ₹1350 (b) ₹9450 (c) ₹10800 (d) ₹10350
Answer key
- 4 years
- ₹3025
- ₹1320
- ₹2100
- 4%
- 3 years
- ₹1710
- 12%
- ₹1800
- 4%
- ₹600
- 2 years
- ₹250
- 12%
- ₹1050
- ₹4800
- ₹700
- 4 years
- ₹1050
- 4 years
- 2 years
- ₹330
- 9%
- 5%
- 12%
- ₹2700
- ₹450
- ₹80
- ₹9900
- 10%
- ₹1785
- ₹10355
- ₹1450
- 3 years
- 4%
- 4 years
- ₹100
- ₹135
- 8%
- ₹10350
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