By selling 100 pencil, a trader gains the cost of 20 Pencil. Find his gain percentage?
Select.
A) 26 1/3%	B) 51 1/3%	C) 20%	D) 53 1/3%	E) 34 1/3%
C   20%   Let the CP of each pencil be Rs. 1.   CP of 100 pens = Rs. 100   Profit = Cost of 20 pencil = Rs. 20   Profit% = 20/100 * 100= 
<gadget id="calculator">20/100 * 100</gadget>
<output>20</output>
20%
<result>C</result>
By selling 100 pencil, a trader gains the cost of 20 Pencil. Find his gain percentage?