Vessels A and B contain mixtures of milk and water in the

Vessels A and B contain mixtures of milk and water in the ratios 4 : 5 and 5 : 1 respectively. In what ratio should quantities of mixture be taken from A and B to form a mixture in which milk to water is in the ratio 5 : 4?

First of all we write the fraction of milk present in three mixtures.

In A;	4	and In B;	5
	9		6

In combination of A and B;	5
	9

From alligation rule,

=	5	:	1
	18		9

⇒	5	:	2	⇒ 5 : 2
	18		18

So, ratio of
A : B = 5 : 2