By selling 150 mangoes, a fruit-seller gains the selling price of 30 mangoes. Find the gain percent?  Pick one.
A) 28%	B) 25%	C) 95%	D) 75%	E) 45%
SP = CP + g   150 SP = 150 CP + 30 SP   120 SP = 150 CP   120 --- 30 CP   100 --- ? =&gt; 25%   Answer:25%
<result>B</result>
By selling 150 mangoes, a fruit-seller gains the selling price of 30 mangoes. Find the gain percent?