Question

A solution of 150 ml contains 60% milk ,the rest being water
​water how much water should be added to the solution so that the percentage of milk in the resulting mixture is only 50%

Answer 1

solution = 150 ml

milk = 150 *60/100 = 90

water = 150 * 40/100 = 60

so M/W = 90/60+x = 50%/50%

90/60+x = 1

90 = 60 + x

x =30