By selling 100 pencil, a trader gains the cost of 10 Pencil. Find his gain percentage? Answers.
A) 26 1/3%  B) 51 1/3%  C) 10%  D) 53 1/3%  E) 34 1/3%
C   10%   Let the CP of each pencil be Rs. 1.   CP of 100 pens = Rs. 100   Profit = Cost of 10 pencil = Rs. 10   Profit% = 10/100 * 100= 
<gadget id="calculator">10/100 * 100</gadget>
<output>10</output>
10%
<result>C</result>
By selling 100 pencil, a trader gains the cost of 10 Pencil. Find his gain percentage?