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:
(A) 6 2/3%
(B) 6 2/8%
(C) 6 9/3%
(D) 6 2/3%
(E) 6 2/1% Hmmm, my stream of consciousness:
4/9 P = (P*R*R)/100
R = 20/3 = 6 2/3% So, the answer is (A).