In how many years will a sum of money doubles itself at 25% per annum on simple interest?
Pick one.
A) 8% B) 2% C) 3% D) 4% E) 5%
P = (P*25*R)/100   R = 4%   ANSWER:4%
<result>D</result>
In how many years will a sum of money doubles itself at 25% per annum on simple interest?