a2zinterviews

1.	Alligation : It is the rule that enables us to find the ratio in which two or more ingredients at the given price must be mixed to produce a mixture of a desired price.

2.	Mean Price : The cost price of a unit quantity of the mixture is called the mean price.

3.	Suppose a container contains x of liquid from which y units are taken out and replaced by water. After n operations, the quantity of pure liquid = [x(1-y/x)n] units.

4.	Rule of Alligation:
	If two ingredients are mixed, then

		Quantity of cheaper		=		C.P. of dearer - Mean Price
		Quantity of dearer				Mean price - C.P. of cheaper

	We present as under :
	C.P. of a unit quantity of cheaper	C.P. of a unit quanitity of dearer
	(Cheaper quantity) : (Dearer quantity) = (d-m):(m-c).