A reduction of 25% in the price of rice enables a person

A reduction of 25% in the price of rice enables a person to buy 10 kg more rice for ₹ 600. The reduced per kg price of rice is

Let original price of rice per kg = ₹ x (let)
∴ New price of rice per kg

= ₹	3x
	4

⇒ 600		4	–	1		= 10
		3x		x

⇒ 600		4 – 3		= 10
		3x

⇒	600	= 10
	3x

⇒ x =	600	= ₹ 20
	30

∴ New price =	3x	-	3 × 20	= ₹ 15/kg
	4		4

Method 2 :
Quicker Approach
If the price of an article is reduced by a% and buyer gets c kg more for some ₹ b, the new

price per kg of article =	ab
	100 × c

=	25 × 600	= ₹ 15
	100 × 10

Aliter : Using Rule 31,
Reduced price per kg

=	25 × 600	= ₹ 15
	100 × 10