Question

Choose the correct answer from the alternatives given.
In a mixture of $35$ litres, the ratio of milk and water is $4:1$. How many litres of water must be added to make the ratio $2:3$?

• A. $28$
• B. $40$
• C. $35$
• D. $70$

Answer 1

The correct option is C $35$

Initial quantity of milk and water is Milk $=\frac{4}{5}\times$ $35=28$litres
Water $=\frac{1}{5}\times$ $35=7$litres.
Let $x$ liters of water is added, then,
$\frac{28}{7+x}=\frac{2}{3}$
$x=35$
Hence , 35 liters of water is added.