Question : A sum of money invested at a certain rate of simple interest per annum amounts to INR 14,522 in seven years and to INR 18,906 in eleven years. Find the sum invested (in INR).

Question : A certain sum of money lent at simple interest amounts to INR 1,200 in 2 years and INR 1,600 in 4 years. The rate percentage per annum is:

Question : A sum of INR 10,500 amounts to INR 13,650 in 2 years at a certain rate percent per annum simple interest. The same sum will amount to what in 1 year at the same rate if the interest is compounded half yearly (nearest to INR 1 )?

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 : The simple interest on a certain sum at the rate of 12.5% per annum for 6 years is INR 13,500 less than the principal. Find the simple interest.