Question

In 30 litres mixture of acid, the ratio of acid and water is 2 : 3 . what amount of water should be added to the mixture so that the ratio of acid and water becomes 2:5

Answer 1

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Answer 2

Answer:

12 L of water should be added to the mixture.

Explanation:

Ratio of acid to water in a mixture = 2:3

Let volume of acid be 2x and water be 3x

2x + 3x = 30

5x = 30

x = 6

Let y be the water added to mixture so that the ratio of acid and water changes to 2:5.

$\frac{2x}{3x+y}=\frac{2}{5}$ (x = 6)

y = 12 L

12 L of water should be added to the mixture.