The sum of money will be double itself in 40 years and simple interest find rate of interest? Choices:
A) A)1.5%	B) B)2.5%	C) C)3.5%	D) D)4.5%	E) E)5.5%
T = 40 years   P= principle amount = x   A = total amount = 2x   SI = simple interest = A-P = 2x-x = x   R = 100SI/PT = 100x/40x =2.5%   Answer is 2.5%100 /40= 
<gadget id="calculator">100 /40</gadget>
<output>5/2 = around 2.5</output>
2.5%   Answer is 2.5%
<result>B</result>
The sum of money will be double itself in 40 years and simple interest find rate of interest?