Vedic Maths trick to find Mixture Problem

In what ratio must water to be mixed with milk costing Rs.20 per liter to obtain a mixtureworth of Rs.14 per liter.

A = Cost price of unit quantity of cheaper(water)
B = Cost price of unit quantity of dearer(milk)
M = Mean price

lets take X = Rs.00
Y = Rs.20
M = Rs.14

Now we will find ratio using value given above,

A : B

(Y - M) : (M - X)

(20 - 14) : (14 - 0)

3 : 7

Watch Youtube video of Mixture Problem for better understanding.