The sum of money will be triple itself in 20years and simple interest find rate of interest?  Select
A) A)5% B) B)10% C) C)15% D) D)20% E) E)25%
T = 20 years   P= principle amount = x   A = total amount = 3x   SI = simple interest = A-P = 3x-x = 2x   R = 100SI/PT = 100.2x/20x =10%   Answer is 10%
<result>B</result>
The sum of money will be triple itself in 20years and simple interest find rate of interest?