The simple interest on a sum of money is of the principal and the rate percent is equal to number of years. The rate percent is

The simple interest on a sum of money is 1/16 of the principal and the number of years is equal to the rate per cent annum. Find the rate per cent.

The simple interest on a sum of money is (1)/(9) th of the principal, and the number of years is equal to the rate per cent per annum. Find the rate per cent.

If the simple interest on a certain sum of money is 4//25th of the sum and the rate per cent equal to the number of years, then find the rate of interest per annum.

The simple interest on a sum of money is 1/144 of the principal and the number of years is equal to the rate per cent per annum. What will be the rate per cent per annum?

The simple interest on a sum of money is 1/9 of the principal and the number of years is equal to rate percent per annum. The rate per annum is___