At what rate percent on simple interest will a sum of money double itself in 30 years?	Choose the correct choice from the following answers
A) 3 1/3%
B) 3 1/7%
C) 3 9/3%
D) 3 5/3%
E) 3 3/3%
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?