A milkman has a 15 litres drum with 9 litres milk. He filled the drum with water and now takes out $$\frac{1}{2}$$ litre of the mixture. What is the quantity of milk (in millilitres) in the mixture taken out?

Solution (By Examveda Team)

\[\begin{array}{*{20}{c}} {{\text{Total capacity}}}&{{\text{Milk}}}&{}&{{\text{Water}}} \\ {15}&9&:&6 \\ {}&3&:&2 \end{array}\]
Half liter is taken out
Milk = 500 ml × $$\frac{3}{5}$$ = 300 ml