Method and examples
 Simple Interest 1. S.I. on Rs. 972 at 14 % per annum for a certain time is Rs. 476.28 . Find the time ? 2. S.I. on Rs. 972 at a certain rate % per annum for 3.5 years is Rs. 476.28 . Find the rate ? 3. A sum of money lent at simple interest amounts to Rs 1008 in 2 years and to 1112 in 3 years. Find the sum & the rate of i ... 4. What sum of money lent out at simple interest at 9 % p.a. for 3/2 years will produce the same interest as Rs 2250 lent ... 5. A man puts out Rs 500 for 4 years on simple interest and Rs 600 for 3 years. The total interest he receives is Rs 19 ... 6. A sum was put at simple interest at a certain rate for 2 years. Had it been put at 3 % highere rate, it whould have fet ... 7. Divide Rs 16875 into two parts such that the interest at 7/2 % p.a. for 2 years on one part is equal to the other at ... 8. A shopkeeper borrowed Rs. 20000 from two money lenders. For one loan he paid 12 % and for the other 14 % per annum. Af ... 9. At what rate percent per annum will sum of money double in 8 years? 10. Rajeev deposited money in the post office which is doubled in 20 years at a simple rate of interest. In how many years w ... 11. Find the simple interest on Rs. 730 for 184 days at 25/4 % per annum. 12. Find the simple interest on Rs. 4660 for 5 years at 7/2 % per annum. 13. The interest on a certain amount of money at 8 % per year for a period of 4 years is Rs 512 . Find the sum of money. Problem 3 of 13 3. A sum of money lent at simple interest amounts to Rs in years and to in years. Find the sum & the rate of interest.

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