A man buys an article for $20. and sells it for $35. Find the gain percent?  Pick.
A) 25%  B) 50%  C) 20%  D) 75%  E) 30%
C.P. = $20   S.P. = $35   Gain = $15   Gain% = 15/20 *100= 
<gadget id="calculator">15/20 *100</gadget>
<output>75</output>
75%   Answer is 75%
<result>D</result>
A man buys an article for $20. and sells it for $35. Find the gain percent?