20% profit is made when a discount of 20% is given on the

20% profit is made when a discount of 20% is given on the marked price. When the discount is 30% profit will be

Let the marked price of article be Rs. M and its C.P. be Rs. 100.
According to the question,

M ×	80	=	100 × 120
	100		100

⇒ M =	120 × 100	= Rs. 150
	90

S.P. after a discount of 30% =	150 × 70
	100

Selling Price = Rs. 105 i.e. gain = 5%