Question : The simple interest on a sum of money is $\frac{8}{25}$ of the sum. If the number of years is numerically half of the rate percent per annum, then the rate percent per annum is:

Question : The compound interest (compounding annually) on a certain sum at the rate of 8% per annum for two years is INR 6,656. What would be the simple interest on the same sum at the same rate of interest for two years?

Question : INR 2,500, when invested for 8 years at a given rate of simple interest per year, amounted to INR 3,725 on maturity. What was the rate of simple interest that was paid per annum?

Question : In how much time will the simple interest on a certain sum of money be $\frac{6}{5}$th times of the sum at 20% per annum?

Question : A man invests a total sum of INR 10,000 in a company. A part of the sum was invested at 10% simple interest per annum and the remaining part, at 15% simple interest per annum. If the total interest accrued in two years equals INR 2,400, the sum invested at 15% simple