A tradesman marks his goods at such a price that after allowing

A tradesman marks his goods at such a price that after allowing a discount of 15%, he makes a profit of 20%. What is the marked price of an article whose cost price is ₹ 170 ?

Here , Cost price = ₹ 170 , discount = 15% , profit = 20%
If the marked price be y, then

y ×	85	=	170 × 120
	100		100

⇒ y =	170 × 120	= ₹ 240
	85

Second method :
Given Here, D = 15% , r = 20% , C.P. = ₹ 170
Using the given formula ,

M.P.	=	100 + r
C.P.	=	100 − D

M.P.	=	100 + 20
170	=	100 − 15

M.P.	=	120
170	=	85

M.P. =	120 × 170	= ₹ 240
	85