Question

In a mixture of milk and water of 120 litres, the ratio of milk to water is 2 : 1. lf the ratio of milk to water needs to be 1 : 2, then the amount of water that needs to be added to the mixture is:

Options

• 110 litres

• 120 litres

• 140 litres

• 130 litres

Answer 1

120 litres

Explanation:

Ratio of milk and water is 2 : 1

∴ 3 unit → 120 lt.

1 unit → 40 lt.

New mixture - `M/(W + x) = 1/2`

⇒ `80/(40 + x) = 1/2`

⇒ 40 + x = 160

⇒ x = 120 lt.