A person paid ₹ 17,000 for a motor-car after a single

A person paid ₹ 17,000 for a motor-car after a single discount of 15%. If he is given successive discounts of 5% and 10% then how much he would pay ?

Let M be the marked price.
Single Discount = 15%
⇒ 100 – 15 = 85
85% of M = 17,000

∴ M =	17,000	× 100
	85

M = ₹ 20,000

Required SP = 20,000 ×	95	×	90
	100		100

Required SP = 180 × 95 = ₹ 17100
Alternate method to solve this question :

M.P =	S.P. × 100
	100 − D

M.P =	17000 × 100
	100 − 15

M.P =	17000 × 100
	85

M.P. = 20000

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

S.P = 20000		100 − 5			100 − 10
		100			100

S. P = 20000 ×	95	×	90
	100		100

S.P = 180 × 95 = ₹ 17100