If the annual interest on a principal is 25%, how many years before the amount is double? Select the correct option: A) 2 B) 3 C) 7 D) 4 E) 5
P = (P*25*R)/100   R = 4%   Answer: 4
<result>D</result>
If the annual interest on a principal is 25%, how many years before the amount is double?