On selling an article for $ 105 a trader loses 9%. To gain

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On selling an article for $ 105 a trader loses 9%. To gain 30% he should sell the article at

Let C.P. = 100%
Given that , Selling price of an article = $ 105
Loss % = 11%
(100 – 9)% = 91% = 105
To gain 30% ,

(100 + 30)% =	105	× 130 = $ 150
	91

Second method to solve this question :

C.P. = 105 ×			100
			100 - 9

C.P. =	105 × 100
	91

C.P. =	1500
	13

New S.P.=	1500	×			100 + 30			= 15 × 10 = Rs 150
	13				100