A sum of money invested at compound interest amounts to `Rs 800` in 3 years and to `Rs840` in 4 years. The rate of interest per annum is

A sum of money invested at a compound interest amounts to 800 in 2 year and 840 in 3 year. The rate of interest is

A sum of money invested at compound interest amounts to ? 800 in 2 yr and ? 840 in 3 yr. Find the rate of interest per annum and the sum.

A sum of money at compound interest amounts to Rs. 4050 in one year and to Rs. 4723.92 in 3 years. Find the rate of interest per annum.

A sum of money on compound interest amount to Rs. 9680 in 2 years and to Rs. 10648 in 3 years. What is the rate of interest per annum?

Sum of money invested at compound interest amounts to Rs. 4624 in 2 years and Rs. 4913 in 3 years. The sum of money is-