A merchant buys an article for $ 27 and sells it at a profit

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A merchant buys an article for $ 27 and sells it at a profit of 10% of the selling price. The selling price of the article is :

Here , Cost Price = $ 27 , Profit% = 10%

S.P. – C.P. =		10 S.P.	=	S.P.
		100		10

⇒ S.P. -	S.P.	= C.P.
	10

⇒	10S.P. - S.P.	= 27
	10

⇒ S.P. =	27 × 10	= $ 30
	9

Second method to solve this question :

C.P. = 27, Profit =	10
	100

Profit =	S.P.
	10

∴ Profit = S.P. – C.P.

⇒	S.P.	= S.P. - 27
	10

27 = S.P. –	S.P.
	10

S.P. =	27 × 10	= $ 30
	9