By selling an shirt for $300, a shop keeper gains 20%. During a clearance sale, the shopkeeper allows a discount of 10% on the marked price. His gain percent during the sale is:	Select:
A) 2	B) 14	C) 8%	D) 12	E) 10
C   8%   Marked price = $300   C.P. = 100/120 * 300= 
<gadget id="calculator">100/120 * 300</gadget>
<output>250</output>
$250   Sale price= 90% of $300 = $270   Required gain % = 20/250 * 100= 
<gadget id="calculator">20/250 * 100</gadget>
<output>8</output>
8%.
<result>C</result>
By selling an shirt for $300, a shop keeper gains 20%. During a clearance sale, the shopkeeper allows a discount of 10% on the marked price. His gain percent during the sale is: