At what rate percent on simple interest will a sum of money double itself in 60 years?	Choose one:
A) 3 1/3% B) 3 1/9% C) 1 2/3% D) 3 2/3% E) 3 6/3%
P = (P*60*R)/100   R = 1 2/3%   Answer: 1 2/3%
<result>C</result>
At what rate percent on simple interest will a sum of money double itself in 60 years?