A milkman sells his milk at CP but he mixes it with water and thereby gains 25%. What is the % of water in the mixture? Pick: A) 10% B) 15% C) 20% D) 25% E) 30%
Here Gain= 25%   error = quantity of water he mixes in the milk =x   true value = true quantity of milk = T   So the formula becomes, 25=x(T−x)×100   ⇒1=x(T−x)×4⇒T−x=4x⇒T=5x   Percentage of water in the mixture   =xT×100=x5x×100=15×100=20%   20%
<result>C</result>
A milkman sells his milk at CP but he mixes it with water and thereby gains 25%. What is the % of water in the mixture?