In what ratio must a grocer mix sugar at 72 paise per kg

In what ratio must a grocer mix sugar at 72 paise per kg with sugar at 48 paise per kg. So that by selling the mixture at
63 paise per kg he may gain 1 of his out-lay ?
6

According to question ,

	1 +	1		= 1	1	of the cost price of a kg of the mixture = 63 paise
		6			6

∴ Cost price of a kg of the mixture =	63		= 54 paise
	1	1
		6

Now, applying the given formula, we have

The required answer =	54 – 48	= 1 : 3.
	72 – 54

63 paise per kg he may gain	1	of his out-lay ?
	6