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 ₹6000 at 10% per year for 2 years? (a) ₹600 (b) ₹1200 (c) ₹1800 (d) ₹7200
- 2.What is the simple interest on ₹10000 at 9% per year for 5 years? (a) ₹900 (b) ₹5400 (c) ₹14500 (d) ₹4500
- 3.What is the simple interest on ₹4000 at 9% per year for 5 years? (a) ₹1800 (b) ₹360 (c) ₹2160 (d) ₹5800
- 4.The simple interest on ₹7000 for 4 years is ₹1120. What is the rate per year? (a) 5% (b) 3% (c) 4% (d) 16%
- 5.What is the simple interest on ₹10000 at 7% per year for 5 years? (a) ₹700 (b) ₹13500 (c) ₹4200 (d) ₹3500
- 6.The simple interest on ₹2000 for 2 years is ₹200. What is the rate per year? (a) 10% (b) 4% (c) 5% (d) 6%
- 7.The simple interest on ₹6500 for 4 years is ₹3120. What is the rate per year? (a) 12% (b) 48% (c) 13% (d) 11%
- 8.What is the simple interest on ₹6500 at 7% per year for 2 years? (a) ₹455 (b) ₹910 (c) ₹1365 (d) ₹7410
- 9.The simple interest on ₹9000 for 2 years is ₹1800. What is the rate per year? (a) 11% (b) 9% (c) 10% (d) 20%
- 10.The simple interest on ₹5000 for 4 years is ₹1400. What is the rate per year? (a) 28% (b) 6% (c) 8% (d) 7%
- 11.The simple interest on ₹7500 for 2 years is ₹1800. What is the rate per year? (a) 12% (b) 13% (c) 24% (d) 11%
- 12.In how many years will ₹4500 earn ₹675 simple interest at 5% per year? (a) 4 years (b) 6 years (c) 2 years (d) 3 years
- 13.What is the simple interest on ₹9500 at 4% per year for 2 years? (a) ₹380 (b) ₹760 (c) ₹1140 (d) ₹10260
- 14.The simple interest on ₹1500 for 2 years is ₹180. What is the rate per year? (a) 7% (b) 12% (c) 5% (d) 6%
- 15.What is the simple interest on ₹1500 at 2% per year for 4 years? (a) ₹1620 (b) ₹30 (c) ₹150 (d) ₹120
- 16.In how many years will ₹8000 earn ₹2240 simple interest at 7% per year? (a) 5 years (b) 4 years (c) 8 years (d) 3 years
- 17.In how many years will ₹6000 earn ₹480 simple interest at 2% per year? (a) 5 years (b) 4 years (c) 8 years (d) 3 years
- 18.What is the simple interest on ₹1500 at 2% per year for 3 years? (a) ₹1590 (b) ₹120 (c) ₹30 (d) ₹90
- 19.In how many years will ₹6500 earn ₹520 simple interest at 4% per year? (a) 4 years (b) 3 years (c) 1 year (d) 2 years
- 20.What is the simple interest on ₹10000 at 10% per year for 2 years? (a) ₹3000 (b) ₹1000 (c) ₹2000 (d) ₹12000
- 21.The simple interest on ₹5500 for 5 years is ₹1925. What is the rate per year? (a) 35% (b) 8% (c) 7% (d) 6%
- 22.In how many years will ₹9500 earn ₹1140 simple interest at 4% per year? (a) 4 years (b) 6 years (c) 2 years (d) 3 years
- 23.In how many years will ₹10000 earn ₹3300 simple interest at 11% per year? (a) 2 years (b) 6 years (c) 3 years (d) 4 years
- 24.₹1000 is invested at 10% per year simple interest. What is the amount after 4 years? (a) ₹1100 (b) ₹400 (c) ₹1400 (d) ₹1500
- 25.What is the simple interest on ₹6000 at 5% per year for 4 years? (a) ₹1200 (b) ₹300 (c) ₹1500 (d) ₹7200
- 26.The simple interest on ₹3000 for 5 years is ₹1200. What is the rate per year? (a) 40% (b) 9% (c) 7% (d) 8%
- 27.In how many years will ₹1000 earn ₹160 simple interest at 8% per year? (a) 1 year (b) 4 years (c) 3 years (d) 2 years
- 28.The simple interest on ₹6000 for 4 years is ₹720. What is the rate per year? (a) 12% (b) 4% (c) 2% (d) 3%
- 29.What is the simple interest on ₹5000 at 10% per year for 5 years? (a) ₹500 (b) ₹7500 (c) ₹3000 (d) ₹2500
- 30.The simple interest on ₹1000 for 2 years is ₹220. What is the rate per year? (a) 11% (b) 10% (c) 22% (d) 12%
- 31.What is the simple interest on ₹8500 at 12% per year for 3 years? (a) ₹1020 (b) ₹3060 (c) ₹4080 (d) ₹11560
- 32.₹6500 is invested at 5% per year simple interest. What is the amount after 3 years? (a) ₹6825 (b) ₹975 (c) ₹7475 (d) ₹7800
- 33.₹10000 is invested at 8% per year simple interest. What is the amount after 5 years? (a) ₹4000 (b) ₹14800 (c) ₹14000 (d) ₹10800
- 34.In how many years will ₹8000 earn ₹1760 simple interest at 11% per year? (a) 1 year (b) 3 years (c) 2 years (d) 4 years
- 35.₹2500 is invested at 4% per year simple interest. What is the amount after 4 years? (a) ₹400 (b) ₹3000 (c) ₹2600 (d) ₹2900
- 36.In how many years will ₹2500 earn ₹200 simple interest at 2% per year? (a) 4 years (b) 5 years (c) 3 years (d) 8 years
- 37.₹6000 is invested at 8% per year simple interest. What is the amount after 5 years? (a) ₹6480 (b) ₹8400 (c) ₹2400 (d) ₹8880
- 38.What is the simple interest on ₹3000 at 6% per year for 3 years? (a) ₹180 (b) ₹720 (c) ₹3540 (d) ₹540
- 39.What is the simple interest on ₹8000 at 5% per year for 3 years? (a) ₹1200 (b) ₹9200 (c) ₹400 (d) ₹1600
- 40.In how many years will ₹5500 earn ₹1155 simple interest at 7% per year? (a) 6 years (b) 2 years (c) 4 years (d) 3 years
Answer key
- ₹1200
- ₹4500
- ₹1800
- 4%
- ₹3500
- 5%
- 12%
- ₹910
- 10%
- 7%
- 12%
- 3 years
- ₹760
- 6%
- ₹120
- 4 years
- 4 years
- ₹90
- 2 years
- ₹2000
- 7%
- 3 years
- 3 years
- ₹1400
- ₹1200
- 8%
- 2 years
- 3%
- ₹2500
- 11%
- ₹3060
- ₹7475
- ₹14000
- 2 years
- ₹2900
- 4 years
- ₹8400
- ₹540
- ₹1200
- 3 years
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