A sum of money at simple interest amounts to ₹ 1,012 in years and to ₹ 1,067.20 in 4 years. The rate of interest per annum is:

What is the rate of interest per annum for simple interest at which Rs.880 amounts to Rs.913 in years?

On a sum Rina earn a interest of Rs. 1519 at S.I. in 7 years at 7% p.a. Find the sum.

At what rate of simple interest will a sum of money double in 8 years?

A sum of money doubles itself in 7 years at simple interest. In how much time will it become 5 times of itself?

₹ 1,000 is invested at 5% per annum simple interest. If the interest is added to the Aprincipal after every 10 years, the amount will become 2,000 after

In 5 years, the simple interest on an amount of Rs. X is of the principal. The rate of interest per annum is:

At what rate per cent per annum will a sum of money double in 8 years?