Find the percentage gain if a shop owner sells 39 mtr of fabric and gains Cost Price of 12 meters? Choose the correct choice from the following answers:
A) 20.5%	B) 23.5%	C) 21.5%	D) 13.5%	E) 32.5%
Let cost of each metre be Rs. 100.   Therefore, cost price of 12m cloth = 12*100= 
<gadget id="calculator">12*100</gadget>
<output>1_200</output>
1200   cost price of 39m cloth= 39*100= 
<gadget id="calculator">39*100</gadget>
<output>3_900</output>
3900   Since the trader made the CP of 12m from the sale of 39m therefore   Profit on sale of 39m= cost price of 12 m cloth = 1200   Selling price of 39m = 3900+1200= 
<gadget id="calculator">3900+1200</gadget>
<output>5_100</output>
5100   Profit %= 23.5%   23.5%
<result>B</result>
Find the percentage gain if a shop owner sells 39 mtr of fabric and gains Cost Price of 12 meters?