Vedic Maths trick to find Mixture Problem

In what ratio must water to be mixed with milk costing Rs.26 per liter to obtain a mixtureworth of Rs.19 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.26
M = Rs.19

Now we will find ratio using value given above,

A : B

(Y - M) : (M - X)

(26 - 19) : (19 - 0)

7 : 19

Watch Youtube video of Mixture Problem for better understanding.