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 ₹1500 earn ₹270 simple interest at 9% per year? (a) 2 years (b) 3 years (c) 1 year (d) 4 years
- 2.In how many years will ₹7500 earn ₹1350 simple interest at 9% per year? (a) 3 years (b) 4 years (c) 2 years (d) 1 year
- 3.₹8500 is invested at 9% per year simple interest. What is the amount after 4 years? (a) ₹11560 (b) ₹12325 (c) ₹9265 (d) ₹3060
- 4.What is the simple interest on ₹8000 at 4% per year for 3 years? (a) ₹320 (b) ₹8960 (c) ₹1280 (d) ₹960
- 5.₹1500 is invested at 8% per year simple interest. What is the amount after 2 years? (a) ₹1860 (b) ₹1620 (c) ₹1740 (d) ₹240
- 6.₹3500 is invested at 12% per year simple interest. What is the amount after 2 years? (a) ₹840 (b) ₹3920 (c) ₹4760 (d) ₹4340
- 7.In how many years will ₹9500 earn ₹570 simple interest at 3% per year? (a) 1 year (b) 2 years (c) 3 years (d) 4 years
- 8.₹7500 is invested at 6% per year simple interest. What is the amount after 2 years? (a) ₹8400 (b) ₹900 (c) ₹7950 (d) ₹8850
- 9.₹3000 is invested at 3% per year simple interest. What is the amount after 2 years? (a) ₹3180 (b) ₹180 (c) ₹3270 (d) ₹3090
- 10.₹4500 is invested at 5% per year simple interest. What is the amount after 2 years? (a) ₹4950 (b) ₹4725 (c) ₹450 (d) ₹5175
- 11.What is the simple interest on ₹3000 at 11% per year for 5 years? (a) ₹1650 (b) ₹4650 (c) ₹330 (d) ₹1980
- 12.In how many years will ₹7500 earn ₹1800 simple interest at 12% per year? (a) 1 year (b) 4 years (c) 2 years (d) 3 years
- 13.What is the simple interest on ₹4000 at 2% per year for 2 years? (a) ₹4160 (b) ₹160 (c) ₹80 (d) ₹240
- 14.₹6000 is invested at 5% per year simple interest. What is the amount after 3 years? (a) ₹6300 (b) ₹900 (c) ₹6900 (d) ₹7200
- 15.What is the simple interest on ₹1500 at 8% per year for 3 years? (a) ₹1860 (b) ₹360 (c) ₹480 (d) ₹120
- 16.The simple interest on ₹8000 for 5 years is ₹3200. What is the rate per year? (a) 9% (b) 7% (c) 8% (d) 40%
- 17.In how many years will ₹1000 earn ₹200 simple interest at 5% per year? (a) 5 years (b) 3 years (c) 4 years (d) 8 years
- 18.The simple interest on ₹5000 for 2 years is ₹400. What is the rate per year? (a) 5% (b) 3% (c) 4% (d) 8%
- 19.What is the simple interest on ₹3000 at 10% per year for 2 years? (a) ₹900 (b) ₹3600 (c) ₹600 (d) ₹300
- 20.In how many years will ₹9500 earn ₹2090 simple interest at 11% per year? (a) 4 years (b) 1 year (c) 2 years (d) 3 years
- 21.The simple interest on ₹2000 for 5 years is ₹600. What is the rate per year? (a) 7% (b) 6% (c) 5% (d) 30%
- 22.In how many years will ₹9500 earn ₹1140 simple interest at 3% per year? (a) 5 years (b) 3 years (c) 8 years (d) 4 years
- 23.What is the simple interest on ₹1000 at 5% per year for 3 years? (a) ₹50 (b) ₹200 (c) ₹150 (d) ₹1150
- 24.What is the simple interest on ₹3500 at 9% per year for 2 years? (a) ₹630 (b) ₹945 (c) ₹315 (d) ₹4130
- 25.The simple interest on ₹8000 for 3 years is ₹1440. What is the rate per year? (a) 6% (b) 5% (c) 18% (d) 7%
- 26.What is the simple interest on ₹1500 at 7% per year for 3 years? (a) ₹1815 (b) ₹105 (c) ₹420 (d) ₹315
- 27.What is the simple interest on ₹8500 at 4% per year for 4 years? (a) ₹1360 (b) ₹9860 (c) ₹1700 (d) ₹340
- 28.What is the simple interest on ₹7000 at 2% per year for 3 years? (a) ₹140 (b) ₹7420 (c) ₹560 (d) ₹420
- 29.What is the simple interest on ₹4500 at 2% per year for 5 years? (a) ₹90 (b) ₹450 (c) ₹540 (d) ₹4950
- 30.In how many years will ₹5000 earn ₹2750 simple interest at 11% per year? (a) 6 years (b) 10 years (c) 5 years (d) 4 years
- 31.The simple interest on ₹9000 for 2 years is ₹1260. What is the rate per year? (a) 6% (b) 14% (c) 8% (d) 7%
- 32.In how many years will ₹6000 earn ₹1680 simple interest at 7% per year? (a) 3 years (b) 5 years (c) 8 years (d) 4 years
- 33.The simple interest on ₹7500 for 3 years is ₹450. What is the rate per year? (a) 2% (b) 1% (c) 3% (d) 6%
- 34.In how many years will ₹4500 earn ₹2250 simple interest at 10% per year? (a) 6 years (b) 5 years (c) 4 years (d) 10 years
- 35.What is the simple interest on ₹8500 at 10% per year for 2 years? (a) ₹1700 (b) ₹2550 (c) ₹850 (d) ₹10200
- 36.In how many years will ₹6000 earn ₹1980 simple interest at 11% per year? (a) 4 years (b) 6 years (c) 3 years (d) 2 years
- 37.What is the simple interest on ₹2000 at 2% per year for 2 years? (a) ₹2080 (b) ₹40 (c) ₹80 (d) ₹120
- 38.What is the simple interest on ₹9500 at 5% per year for 5 years? (a) ₹475 (b) ₹11875 (c) ₹2375 (d) ₹2850
- 39.In how many years will ₹4000 earn ₹360 simple interest at 3% per year? (a) 4 years (b) 2 years (c) 6 years (d) 3 years
- 40.₹5500 is invested at 2% per year simple interest. What is the amount after 2 years? (a) ₹220 (b) ₹5830 (c) ₹5720 (d) ₹5610
Answer key
- 2 years
- 2 years
- ₹11560
- ₹960
- ₹1740
- ₹4340
- 2 years
- ₹8400
- ₹3180
- ₹4950
- ₹1650
- 2 years
- ₹160
- ₹6900
- ₹360
- 8%
- 4 years
- 4%
- ₹600
- 2 years
- 6%
- 4 years
- ₹150
- ₹630
- 6%
- ₹315
- ₹1360
- ₹420
- ₹450
- 5 years
- 7%
- 4 years
- 2%
- 5 years
- ₹1700
- 3 years
- ₹80
- ₹2375
- 3 years
- ₹5720
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