By selling 50 mangoes, a shopkeeper gains the price of 10 mangoes. His gain per cent is  Choose the most appropriate option:
A) 25%
B) 35%
C) 20%
D) 23%
E) 30%
Suppose S.P of 50 mangoes = Rs 50   Therefore, Gain = Rs 10 =&gt; C.P = Rs 40   Gain % = 10/40 x 100 = 25%   Gain = 25%   25%NSWER:25%
<result>A</result>
By selling 50 mangoes, a shopkeeper gains the price of 10 mangoes. His gain per cent is