Question

A dishonest milkman professes to sell his milk at cost price but he mixes it with water and thereby gains 20%. The percentage of water in the mixture is _____________.

Answer 1

Answer:

Answer is 16.6%

Explanation:

step by step:

Sol:

Let CP of 1 lit milk = 1rs

SP of 1 lit of mixture = 1rs

Gain is 20%

CP of 1 lit of mixture = 100/120*1= 5/6

Ratio of milk and water is

5/6–0:1–5/6 = 5/6:1/6

%age of water in mix = 1/6*100 = 16.6%