$500 will become $1000 in 2 years find the rate of interest?
Choose the correct answer:
A) A)10% B) B)20% C) C)25% D) D)30% E) E)50%
SI = simple interest = A-P = 1000-500= 
<gadget id="calculator">1000-500</gadget>
<output>500</output>
$500   R= 100SI/PT = 100*500/500*2 =50%   Answer is 50%
<result>E</result>
$500 will become $1000 in 2 years find the rate of interest?