4/9 P = (P*R*R)/100
R = 20/3 = 6 2/3%
The simple interest on a sum of money is 4/9 of the principal and the number of years is equal to the rate percent. Find the rate and the time?
Options:
1) 6 2/3%
2) 6 2/9%
3) 6 3/3%
4) 9 2/3%
5) 7 2/3%