The simple interest on a sum of money is `4/9` of the principal. Find the rate percent and time, if both are numerically equal.

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 (4)/(9) times the principal and the rate of interest per annum is numerically equal to the number of years. Find the rate of interest per annum.

The simple interest on a certain sum of money is 3/8 of the sum in 6""1/4 years. Find the rate percent charged.

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___

The simple interest on a certain sum is (16)/(25) of the sum. If the rate percent annum and the time are numerically equal, then the rate percent is (a) 8% (b) 4% (c) 6% (d) 12%