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  1. In a mixture of 75 litres, the ratio of milk to water is 2 : 1. The amount of water to be further added to the mixture so as to make the ratio of the milk to water 1 : 2 will be
    1. 45 litres
    2. 60 litres
    3. 75 litres
    4. 80 litres
Correct Option: C

In 75 litres of the mixture,

Milk =
2
× 75 = 50 litres
3

Water =
1
× 75 = 25 litres
3

Let x litres of water be added.
Then,
50
=
1
x + 252

⇒  x + 25 = 100
⇒  x = 75 litres



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