In how many years will a sum of money doubles itself at 5% per annum on simple interest?
Choose the correct choice from the following:
A) 22	B) 20	C) 99	D) 88	E) 76
P = (P*5*R)/100   R = 20%   Answer: 20
<result>B</result>
In how many years will a sum of money doubles itself at 5% per annum on simple interest?