Question

40 litres of milk contain 10% water. Find the quantity of water to be added to the milk so
that it may contain 20% water.

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Answer 1

Answer:

Step-by-step explanation:

In mixture of 40 litre water is 10% i.e. 4 litre.

Let x litre of water be added.

According to the question,

4 + x / 40 + x =  20/100

=> 5(4 + x) = 40 + x

=> 20 + 5x = 40 + x

=> 4x  = 20

=> x = 5 Litres.

Thus quantity of water added is 5 litres.