By selling 50 meters of cloth. I gain the selling price of 15 meters. Find the gain percent?	Choose the correct option.
A) 42 6/5 B) 42 6/0 C) 42 6/3 D) 42 6/7 E) 42 6/2
SP = CP + g   50 SP = 50 CP + 15 SP   35 SP = 50 CP   35 --- 15 CP gain   100 --- ? =&gt; 42 6/7%   Answer:42 6/7
<result>D</result>
By selling 50 meters of cloth. I gain the selling price of 15 meters. Find the gain percent?