A trader buys goods at 20% discount on marked price. If

A trader buys goods at 20% discount on marked price. If he wants to make a profit of 25% after allowing a discount of 20%, by what percent should his marked price be greater than the original marked price ?

Let Original marked price of goods = ₹ 100
20% discount ,

C.P. =	100 × 80	= ₹ 80
	100

Case II
If the marked price be y, then

y ×	80	=	80 × 125
	100		100

⇒ y =	80 × 125	= ₹ 125
	100

Required Percent = 125 – 100 = 25 %