A shopkeeper allows a discount of 12.5 % on the marked price

A shopkeeper allows a discount of 12.5 % on the marked price of a certain article and makes a profit of 20 %. If the article costs the shopkeeper ₹ 210, then the marked price of the article will be

Let Marked price of article = ₹ p

∴	p × (100 − 12.5)	=	210 × 120
	100		100

⇒ p × 87.5 = 210 ×120

⇒ p =	210 × 120	= ₹ 288
	87.5

2nd method to solve this question.
Here,R= 20%, D = 12.5%,
C.P. = ₹ 210, M.P. = ?

M.P.	=	100 + r
C.P.	=	100 − D

M.P.	=	100 + 20
210	=	100 − 12.5

M.P. =	120	× 210
	87.5

Hence Marked Price = ₹ 288