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.The simple interest on ₹7000 for 3 years is ₹420. What is the rate per year? (a) 1% (b) 3% (c) 2% (d) 6%
- 2.The simple interest on ₹5500 for 3 years is ₹660. What is the rate per year? (a) 12% (b) 5% (c) 3% (d) 4%
- 3.₹2500 is invested at 7% per year simple interest. What is the amount after 4 years? (a) ₹3200 (b) ₹3375 (c) ₹700 (d) ₹2675
- 4.What is the simple interest on ₹10000 at 5% per year for 2 years? (a) ₹1500 (b) ₹500 (c) ₹1000 (d) ₹11000
- 5.The simple interest on ₹5500 for 2 years is ₹990. What is the rate per year? (a) 8% (b) 9% (c) 10% (d) 18%
- 6.The simple interest on ₹9000 for 2 years is ₹1980. What is the rate per year? (a) 22% (b) 12% (c) 11% (d) 10%
- 7.₹2500 is invested at 5% per year simple interest. What is the amount after 4 years? (a) ₹500 (b) ₹3125 (c) ₹3000 (d) ₹2625
- 8.The simple interest on ₹10000 for 4 years is ₹3600. What is the rate per year? (a) 8% (b) 10% (c) 36% (d) 9%
- 9.What is the simple interest on ₹7500 at 8% per year for 4 years? (a) ₹3000 (b) ₹600 (c) ₹2400 (d) ₹9900
- 10.₹2500 is invested at 8% per year simple interest. What is the amount after 5 years? (a) ₹2700 (b) ₹3700 (c) ₹1000 (d) ₹3500
- 11.₹1500 is invested at 5% per year simple interest. What is the amount after 2 years? (a) ₹1575 (b) ₹1725 (c) ₹1650 (d) ₹150
- 12.The simple interest on ₹6000 for 5 years is ₹3000. What is the rate per year? (a) 10% (b) 9% (c) 50% (d) 11%
- 13.The simple interest on ₹8500 for 2 years is ₹340. What is the rate per year? (a) 3% (b) 1% (c) 2% (d) 4%
- 14.What is the simple interest on ₹9000 at 10% per year for 4 years? (a) ₹900 (b) ₹4500 (c) ₹3600 (d) ₹12600
- 15.The simple interest on ₹4500 for 4 years is ₹360. What is the rate per year? (a) 1% (b) 8% (c) 3% (d) 2%
- 16.₹3500 is invested at 12% per year simple interest. What is the amount after 4 years? (a) ₹5180 (b) ₹1680 (c) ₹5600 (d) ₹3920
- 17.What is the simple interest on ₹4000 at 8% per year for 3 years? (a) ₹1280 (b) ₹960 (c) ₹320 (d) ₹4960
- 18.What is the simple interest on ₹4000 at 5% per year for 2 years? (a) ₹600 (b) ₹4400 (c) ₹400 (d) ₹200
- 19.The simple interest on ₹8000 for 5 years is ₹1600. What is the rate per year? (a) 5% (b) 3% (c) 4% (d) 20%
- 20.In how many years will ₹6500 earn ₹390 simple interest at 3% per year? (a) 1 year (b) 3 years (c) 4 years (d) 2 years
- 21.What is the simple interest on ₹5500 at 2% per year for 5 years? (a) ₹110 (b) ₹6050 (c) ₹660 (d) ₹550
- 22.The simple interest on ₹3000 for 4 years is ₹720. What is the rate per year? (a) 6% (b) 24% (c) 5% (d) 7%
- 23.In how many years will ₹4000 earn ₹960 simple interest at 6% per year? (a) 5 years (b) 4 years (c) 8 years (d) 3 years
- 24.What is the simple interest on ₹8000 at 12% per year for 5 years? (a) ₹4800 (b) ₹12800 (c) ₹960 (d) ₹5760
- 25.In how many years will ₹3500 earn ₹700 simple interest at 5% per year? (a) 5 years (b) 4 years (c) 8 years (d) 3 years
- 26.What is the simple interest on ₹2500 at 10% per year for 5 years? (a) ₹1500 (b) ₹1250 (c) ₹3750 (d) ₹250
- 27.What is the simple interest on ₹7500 at 5% per year for 4 years? (a) ₹375 (b) ₹9000 (c) ₹1875 (d) ₹1500
- 28.What is the simple interest on ₹10000 at 9% per year for 3 years? (a) ₹3600 (b) ₹12700 (c) ₹2700 (d) ₹900
- 29.What is the simple interest on ₹4000 at 11% per year for 2 years? (a) ₹440 (b) ₹880 (c) ₹1320 (d) ₹4880
- 30.₹3000 is invested at 3% per year simple interest. What is the amount after 5 years? (a) ₹3540 (b) ₹450 (c) ₹3450 (d) ₹3090
- 31.The simple interest on ₹1500 for 2 years is ₹360. What is the rate per year? (a) 11% (b) 13% (c) 24% (d) 12%
- 32.The simple interest on ₹3000 for 5 years is ₹1350. What is the rate per year? (a) 10% (b) 9% (c) 8% (d) 45%
- 33.The simple interest on ₹2000 for 5 years is ₹900. What is the rate per year? (a) 10% (b) 9% (c) 8% (d) 45%
- 34.What is the simple interest on ₹6000 at 5% per year for 2 years? (a) ₹900 (b) ₹6600 (c) ₹600 (d) ₹300
- 35.In how many years will ₹2000 earn ₹280 simple interest at 7% per year? (a) 1 year (b) 4 years (c) 2 years (d) 3 years
- 36.₹5500 is invested at 8% per year simple interest. What is the amount after 3 years? (a) ₹7260 (b) ₹6820 (c) ₹5940 (d) ₹1320
- 37.The simple interest on ₹3500 for 2 years is ₹280. What is the rate per year? (a) 8% (b) 3% (c) 4% (d) 5%
- 38.In how many years will ₹2500 earn ₹300 simple interest at 6% per year? (a) 1 year (b) 3 years (c) 4 years (d) 2 years
- 39.₹2500 is invested at 5% per year simple interest. What is the amount after 5 years? (a) ₹625 (b) ₹3125 (c) ₹2625 (d) ₹3250
- 40.What is the simple interest on ₹5000 at 6% per year for 4 years? (a) ₹1500 (b) ₹300 (c) ₹1200 (d) ₹6200
Answer key
- 2%
- 4%
- ₹3200
- ₹1000
- 9%
- 11%
- ₹3000
- 9%
- ₹2400
- ₹3500
- ₹1650
- 10%
- 2%
- ₹3600
- 2%
- ₹5180
- ₹960
- ₹400
- 4%
- 2 years
- ₹550
- 6%
- 4 years
- ₹4800
- 4 years
- ₹1250
- ₹1500
- ₹2700
- ₹880
- ₹3450
- 12%
- 9%
- 9%
- ₹600
- 2 years
- ₹6820
- 4%
- 2 years
- ₹3125
- ₹1200
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