When the price of sugar decreases by 10%, a man could buy

When the price of sugar decreases by 10%, a man could buy 1 kg more for ₹ 270. Then the original price of sugar per kg is

Let the original price of sugar be ₹ x/kg

∴ New price = ₹	9x	/kg
	10

⇒	300	-	270	= 1 ⇒	30	= 1
	x		x		x

⇒ x = ₹ 30 /kg
Aliter : Using Rule 31,

New price =	10 × 270	= ₹ 27
	100 × 1

Let the original price be Rs. x

⇒ x -	10x	= 27
	100

	90x	= 27
	100

x =	2700	= 30
	90

∴ Original price = ₹ 30 per kg