Question

milk in a container contains 5% of water. what quantity of pure milk should be added to 20 litres so that water content comes down to 2%​

Answer 1

Answer:

Step-by-step explanation:

For 20 litre, moisture content is 5%.

Therefore total moisture content in 20 litre is 1 litre.

i.e. (20*5)/100=1

In order to bring moisture content to 2% one needs to add pure milk of 30 litres.

As 20 + 30 =50 litres of milk which contains 1 litre of moisture

(100 * 1)/50 = 2%