By selling 88 pens, a trader gains the cost of 22 pens. Find his gain percentage?  Pick one:
A) 25%
B) 26%
C) 27%
D) 28%
E) 29%
Let the CP of each pen be Rs. 1.   CP of 88 pens = Rs. 88   Profit = Cost of 22 pens = Rs. 22   Profit% = 22/88 * 100= 
<gadget id="calculator">22/88 * 100</gadget>
<output>25</output>
25%   25%nswer:25%
<result>A</result>
By selling 88 pens, a trader gains the cost of 22 pens. Find his gain percentage?