Find the percentage gain if a shop owner sells 40 mtr of fabric and gains Cost Price of 15 meters?
Choices:	A) 38.50%	B) 39.50%	C) 27.50%	D) 37.50%	E) 17.90%
Let cost of each metre be Rs. 100.   Therefore, cost price of 15m cloth = 15*100= 
<gadget id="calculator">15*100</gadget>
<output>1_500</output>
1500   cost price of 40m cloth= 40*100= 
<gadget id="calculator">40*100</gadget>
<output>4_000</output>
4000   Since the trader made the CP of 15m from the sale of 40m therefore   Profit on sale of 40m= cost price of 15 m cloth = 1500   Selling price of 40m = 4000+1500= 
<gadget id="calculator">4000+1500</gadget>
<output>5_500</output>
5500   Profit %= 37.50%   37.50%
<result>D</result>
Find the percentage gain if a shop owner sells 40 mtr of fabric and gains Cost Price of 15 meters?