At what rate percent on simple interest will a sum of money double itself in 30 years?\nOptions:\n(A) 3 1/9%\n(B) 3 7/3%\n(C) 7 1/3%\n(D) 5 1/3%\n(E) 1 1/3% Let's think first. Stream of consciousness:
User
P = (P*30*R)/100\nR = 3 1/3%
So, the answer is (A).
Assistant