A man buys an article for $100. and sells it for $120. Find the gain percent?
Choose the correct choice from the following options:
A) 10%
B) 15%
C) 25%
D) 20%
E) 30%
C.P. = $100   S.P. = $120   Gain = $20   Gain% = 20/100 *100= 
<gadget id="calculator">20/100 *100</gadget>
<output>20</output>
20%   Answer is 20%
<result>D</result>
A man buys an article for $100. and sells it for $120. Find the gain percent?