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 ₹6000 earn ₹1620 simple interest at 9% per year? (a) 4 years (b) 2 years (c) 6 years (d) 3 years
- 2.The simple interest on ₹8000 for 2 years is ₹1600. What is the rate per year? (a) 9% (b) 10% (c) 11% (d) 20%
- 3.In how many years will ₹6500 earn ₹2925 simple interest at 9% per year? (a) 5 years (b) 6 years (c) 10 years (d) 4 years
- 4.In how many years will ₹6000 earn ₹720 simple interest at 3% per year? (a) 5 years (b) 4 years (c) 3 years (d) 8 years
- 5.What is the simple interest on ₹8000 at 11% per year for 2 years? (a) ₹1760 (b) ₹880 (c) ₹2640 (d) ₹9760
- 6.What is the simple interest on ₹1500 at 2% per year for 2 years? (a) ₹30 (b) ₹90 (c) ₹1560 (d) ₹60
- 7.₹2000 is invested at 6% per year simple interest. What is the amount after 4 years? (a) ₹480 (b) ₹2120 (c) ₹2480 (d) ₹2600
- 8.In how many years will ₹8500 earn ₹2550 simple interest at 6% per year? (a) 4 years (b) 10 years (c) 5 years (d) 6 years
- 9.In how many years will ₹7500 earn ₹750 simple interest at 2% per year? (a) 6 years (b) 4 years (c) 10 years (d) 5 years
- 10.What is the simple interest on ₹1000 at 2% per year for 2 years? (a) ₹20 (b) ₹40 (c) ₹60 (d) ₹1040
- 11.In how many years will ₹7500 earn ₹2250 simple interest at 10% per year? (a) 6 years (b) 4 years (c) 2 years (d) 3 years
- 12.In how many years will ₹9500 earn ₹2850 simple interest at 10% per year? (a) 6 years (b) 4 years (c) 3 years (d) 2 years
- 13.In how many years will ₹1000 earn ₹150 simple interest at 3% per year? (a) 5 years (b) 10 years (c) 4 years (d) 6 years
- 14.What is the simple interest on ₹7000 at 4% per year for 2 years? (a) ₹280 (b) ₹840 (c) ₹7560 (d) ₹560
- 15.The simple interest on ₹8000 for 2 years is ₹960. What is the rate per year? (a) 5% (b) 6% (c) 7% (d) 12%
- 16.₹6500 is invested at 3% per year simple interest. What is the amount after 2 years? (a) ₹390 (b) ₹7085 (c) ₹6695 (d) ₹6890
- 17.What is the simple interest on ₹2000 at 2% per year for 5 years? (a) ₹240 (b) ₹200 (c) ₹40 (d) ₹2200
- 18.What is the simple interest on ₹5000 at 3% per year for 4 years? (a) ₹600 (b) ₹150 (c) ₹750 (d) ₹5600
- 19.The simple interest on ₹1500 for 4 years is ₹420. What is the rate per year? (a) 8% (b) 6% (c) 7% (d) 28%
- 20.What is the simple interest on ₹10000 at 11% per year for 2 years? (a) ₹2200 (b) ₹1100 (c) ₹12200 (d) ₹3300
- 21.The simple interest on ₹2000 for 2 years is ₹280. What is the rate per year? (a) 7% (b) 8% (c) 14% (d) 6%
- 22.What is the simple interest on ₹9500 at 6% per year for 3 years? (a) ₹2280 (b) ₹11210 (c) ₹1710 (d) ₹570
- 23.In how many years will ₹4500 earn ₹1125 simple interest at 5% per year? (a) 5 years (b) 6 years (c) 4 years (d) 10 years
- 24.What is the simple interest on ₹7500 at 12% per year for 5 years? (a) ₹12000 (b) ₹5400 (c) ₹4500 (d) ₹900
- 25.What is the simple interest on ₹4000 at 8% per year for 5 years? (a) ₹5600 (b) ₹320 (c) ₹1600 (d) ₹1920
- 26.₹1000 is invested at 8% per year simple interest. What is the amount after 3 years? (a) ₹1320 (b) ₹1240 (c) ₹240 (d) ₹1080
- 27.The simple interest on ₹7000 for 3 years is ₹1680. What is the rate per year? (a) 7% (b) 24% (c) 9% (d) 8%
- 28.What is the simple interest on ₹1500 at 6% per year for 4 years? (a) ₹90 (b) ₹450 (c) ₹1860 (d) ₹360
- 29.The simple interest on ₹5500 for 2 years is ₹220. What is the rate per year? (a) 3% (b) 2% (c) 1% (d) 4%
- 30.₹6000 is invested at 3% per year simple interest. What is the amount after 3 years? (a) ₹540 (b) ₹6720 (c) ₹6180 (d) ₹6540
- 31.₹6500 is invested at 7% per year simple interest. What is the amount after 2 years? (a) ₹7865 (b) ₹910 (c) ₹7410 (d) ₹6955
- 32.In how many years will ₹1000 earn ₹360 simple interest at 9% per year? (a) 4 years (b) 3 years (c) 8 years (d) 5 years
- 33.What is the simple interest on ₹2500 at 3% per year for 4 years? (a) ₹375 (b) ₹75 (c) ₹300 (d) ₹2800
- 34.The simple interest on ₹7000 for 5 years is ₹3150. What is the rate per year? (a) 10% (b) 9% (c) 45% (d) 8%
- 35.₹2000 is invested at 12% per year simple interest. What is the amount after 2 years? (a) ₹2480 (b) ₹2720 (c) ₹2240 (d) ₹480
- 36.What is the simple interest on ₹4500 at 3% per year for 4 years? (a) ₹5040 (b) ₹135 (c) ₹540 (d) ₹675
- 37.₹1500 is invested at 3% per year simple interest. What is the amount after 3 years? (a) ₹1680 (b) ₹1545 (c) ₹135 (d) ₹1635
- 38.₹1000 is invested at 6% per year simple interest. What is the amount after 5 years? (a) ₹1300 (b) ₹1360 (c) ₹300 (d) ₹1060
- 39.₹8500 is invested at 3% per year simple interest. What is the amount after 4 years? (a) ₹8755 (b) ₹1020 (c) ₹9520 (d) ₹9775
- 40.The simple interest on ₹3500 for 5 years is ₹1925. What is the rate per year? (a) 12% (b) 10% (c) 55% (d) 11%
Answer key
- 3 years
- 10%
- 5 years
- 4 years
- ₹1760
- ₹60
- ₹2480
- 5 years
- 5 years
- ₹40
- 3 years
- 3 years
- 5 years
- ₹560
- 6%
- ₹6890
- ₹200
- ₹600
- 7%
- ₹2200
- 7%
- ₹1710
- 5 years
- ₹4500
- ₹1600
- ₹1240
- 8%
- ₹360
- 2%
- ₹6540
- ₹7410
- 4 years
- ₹300
- 9%
- ₹2480
- ₹540
- ₹1635
- ₹1300
- ₹9520
- 11%
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