Solution for question No.10

by mayur nenwani
(Rajkot, gujarat, india)

As it is stated that 729 ml of mixture containing milk and water in ratio of 7:2.

Solution:

Milk portion : 7/(7+2)*(729) = 567ml
Water portion : 2/(7+2) * (729) = 162ml

Difference of ml b/w milk n water = 405ml

So for making ration of 1:1 i.e half of both, 405ml water should be added so that it contain 567ml of milk and water each.