By selling 150 mangoes, a fruit-seller gains the selling price of 10 mangoes. Find the gain percent?	Choose the correct answer:
A) 7%  B) 25%  C) 21%  D) 85%  E) 24%
SP = CP + g   150 SP = 150 CP + 10 SP   140 SP = 150 CP   140 --- 10 CP   100 --- ? =&gt; 7%   7%nswer:7%
<result>A</result>
By selling 150 mangoes, a fruit-seller gains the selling price of 10 mangoes. Find the gain percent?