At what rate percent on simple interest will a sum of money double itself in 30 years?	Choose the correct choice from the following options:
A) 3 1/3% B) 3 1/9% C) 3 9/3% D) 3 2/3% E) 3 6/3%
P = (P*30*R)/100   R = 3 1/3%   3 1/3%nswer: 3 1/3%
<result>A</result>
At what rate percent on simple interest will a sum of money double itself in 30 years?