By selling 100 pencil, a trader gains the cost of 30 Pencil. Find his gain percentage?  Answers.
A) 26 1/3% B) 51 1/3% C) 30% D) 53 1/3% E) 34 1/3%
C   30%   Let the CP of each pencil be Rs. 1.   CP of 100 pens = Rs. 100   Profit = Cost of 30 pencil = Rs. 30   Profit% = 30/100 * 100= 
<gadget id="calculator">30/100 * 100</gadget>
<output>30</output>
30%
<result>C</result>
By selling 100 pencil, a trader gains the cost of 30 Pencil. Find his gain percentage?