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 ₹1000 at 4% per year for 4 years? (a) ₹1160 (b) ₹200 (c) ₹40 (d) ₹160
- 2.In how many years will ₹8500 earn ₹1870 simple interest at 11% per year? (a) 1 year (b) 2 years (c) 4 years (d) 3 years
- 3.What is the simple interest on ₹9500 at 5% per year for 5 years? (a) ₹475 (b) ₹11875 (c) ₹2850 (d) ₹2375
- 4.What is the simple interest on ₹9500 at 7% per year for 5 years? (a) ₹665 (b) ₹3325 (c) ₹12825 (d) ₹3990
- 5.In how many years will ₹4000 earn ₹400 simple interest at 5% per year? (a) 4 years (b) 2 years (c) 3 years (d) 1 year
- 6.₹7000 is invested at 8% per year simple interest. What is the amount after 4 years? (a) ₹9800 (b) ₹2240 (c) ₹9240 (d) ₹7560
- 7.What is the simple interest on ₹9500 at 5% per year for 3 years? (a) ₹1900 (b) ₹10925 (c) ₹1425 (d) ₹475
- 8.In how many years will ₹9000 earn ₹1080 simple interest at 6% per year? (a) 1 year (b) 3 years (c) 4 years (d) 2 years
- 9.In how many years will ₹2000 earn ₹280 simple interest at 7% per year? (a) 4 years (b) 1 year (c) 2 years (d) 3 years
- 10.In how many years will ₹2000 earn ₹1000 simple interest at 10% per year? (a) 6 years (b) 10 years (c) 5 years (d) 4 years
- 11.The simple interest on ₹3500 for 2 years is ₹700. What is the rate per year? (a) 10% (b) 11% (c) 9% (d) 20%
- 12.₹10000 is invested at 9% per year simple interest. What is the amount after 3 years? (a) ₹10900 (b) ₹12700 (c) ₹2700 (d) ₹13600
- 13.In how many years will ₹4000 earn ₹1800 simple interest at 9% per year? (a) 4 years (b) 10 years (c) 5 years (d) 6 years
- 14.₹2000 is invested at 8% per year simple interest. What is the amount after 2 years? (a) ₹2320 (b) ₹2480 (c) ₹320 (d) ₹2160
- 15.What is the simple interest on ₹5500 at 3% per year for 2 years? (a) ₹330 (b) ₹165 (c) ₹495 (d) ₹5830
- 16.In how many years will ₹5000 earn ₹1050 simple interest at 7% per year? (a) 2 years (b) 4 years (c) 6 years (d) 3 years
- 17.In how many years will ₹4000 earn ₹800 simple interest at 4% per year? (a) 4 years (b) 5 years (c) 6 years (d) 10 years
- 18.In how many years will ₹2500 earn ₹700 simple interest at 7% per year? (a) 3 years (b) 5 years (c) 8 years (d) 4 years
- 19.₹4500 is invested at 7% per year simple interest. What is the amount after 3 years? (a) ₹5445 (b) ₹4815 (c) ₹945 (d) ₹5760
- 20.In how many years will ₹8500 earn ₹1700 simple interest at 4% per year? (a) 6 years (b) 5 years (c) 10 years (d) 4 years
- 21.The simple interest on ₹3000 for 2 years is ₹600. What is the rate per year? (a) 20% (b) 10% (c) 11% (d) 9%
- 22.In how many years will ₹5000 earn ₹1000 simple interest at 5% per year? (a) 8 years (b) 3 years (c) 4 years (d) 5 years
- 23.What is the simple interest on ₹9500 at 3% per year for 4 years? (a) ₹1425 (b) ₹285 (c) ₹10640 (d) ₹1140
- 24.What is the simple interest on ₹4000 at 2% per year for 2 years? (a) ₹240 (b) ₹160 (c) ₹80 (d) ₹4160
- 25.₹4000 is invested at 9% per year simple interest. What is the amount after 2 years? (a) ₹5080 (b) ₹720 (c) ₹4360 (d) ₹4720
- 26.₹5500 is invested at 2% per year simple interest. What is the amount after 3 years? (a) ₹5610 (b) ₹5830 (c) ₹5940 (d) ₹330
- 27.In how many years will ₹3500 earn ₹350 simple interest at 5% per year? (a) 1 year (b) 2 years (c) 3 years (d) 4 years
- 28.What is the simple interest on ₹9500 at 9% per year for 2 years? (a) ₹11210 (b) ₹2565 (c) ₹855 (d) ₹1710
- 29.In how many years will ₹6000 earn ₹840 simple interest at 7% per year? (a) 4 years (b) 2 years (c) 1 year (d) 3 years
- 30.₹1500 is invested at 4% per year simple interest. What is the amount after 3 years? (a) ₹180 (b) ₹1740 (c) ₹1680 (d) ₹1560
- 31.In how many years will ₹5000 earn ₹2400 simple interest at 12% per year? (a) 5 years (b) 8 years (c) 4 years (d) 3 years
- 32.In how many years will ₹8000 earn ₹1920 simple interest at 12% per year? (a) 2 years (b) 1 year (c) 4 years (d) 3 years
- 33.The simple interest on ₹5500 for 5 years is ₹3300. What is the rate per year? (a) 12% (b) 13% (c) 60% (d) 11%
- 34.The simple interest on ₹9000 for 2 years is ₹2160. What is the rate per year? (a) 12% (b) 13% (c) 24% (d) 11%
- 35.₹10000 is invested at 3% per year simple interest. What is the amount after 2 years? (a) ₹10600 (b) ₹10300 (c) ₹600 (d) ₹10900
- 36.What is the simple interest on ₹1500 at 3% per year for 4 years? (a) ₹1680 (b) ₹225 (c) ₹180 (d) ₹45
- 37.In how many years will ₹9500 earn ₹950 simple interest at 5% per year? (a) 4 years (b) 2 years (c) 3 years (d) 1 year
- 38.In how many years will ₹9000 earn ₹1440 simple interest at 8% per year? (a) 3 years (b) 2 years (c) 4 years (d) 1 year
- 39.The simple interest on ₹2500 for 4 years is ₹200. What is the rate per year? (a) 3% (b) 1% (c) 8% (d) 2%
- 40.The simple interest on ₹1000 for 3 years is ₹240. What is the rate per year? (a) 8% (b) 7% (c) 24% (d) 9%
Answer key
- ₹160
- 2 years
- ₹2375
- ₹3325
- 2 years
- ₹9240
- ₹1425
- 2 years
- 2 years
- 5 years
- 10%
- ₹12700
- 5 years
- ₹2320
- ₹330
- 3 years
- 5 years
- 4 years
- ₹5445
- 5 years
- 10%
- 4 years
- ₹1140
- ₹160
- ₹4720
- ₹5830
- 2 years
- ₹1710
- 2 years
- ₹1680
- 4 years
- 2 years
- 12%
- 12%
- ₹10600
- ₹180
- 2 years
- 2 years
- 2%
- 8%
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