The compoud interest on Rs 1000 is Rs 331 for 3 years at certain rate of interest, what is the rate of interest.

If the difference between C.I & S.I on a Rs. 1960 is Rs. 19.60 for 2 years at certain rate of interest. Find the rate of interest.

A sum of Rs 95 amounts to Rs 105 in 3 years at a certain rate of simple interest. In 5 years, at the same rate of interest, what will a sum of Rs 171 amount to:

The difference between compound interest (compounded annually) and simple interest on a sum of Rs. 1000 at a certain rate of interest for 2 years is Rs. 10. The rate of interest per annum is:

A sum of Rs 4200 becomes Rs 5082 in 3 years rate simple interest. What is the rate of interest per annum?

A sum amounts to Rs. 5600 in 4 years and Rs. 6400 in 6 years at a certain rate of simple interest. Find the rate of interest per annum and the sum.