The marked price of an article is ₹ 500. It is sold at

The marked price of an article is ₹ 500. It is sold at successive discounts of 20 % and 10 %. The selling price of the article (in rupees) is :

Equivalent discount of successive discounts of 20% and 10%

=		20 + 10 −	20 × 10		% = 28 %
			100

∴ Selling Price = (100 – 28) % of ₹ 500 = 72 % of 500

= ₹	500 × 72	= ₹ 360
	100

IInd Method to Solve this question.
M.P. = Rs. 500
D₁ = 20%
D₂ = 10%

S.P. = M.P.		100 − D₁			100 − D₂
		100			100

= 500		100 − 20			100 − 10
		100			100

= 500 ×	80	×	90	= Rs. 360
	100		100