Question

Milk contains 5% water.What quantity of pure milk should be added to 10litres of milk to reduce this to 2%.

Answer 1

Answer:

15 litres

Step-by-step explanation:

Quantity of water in 10 litres =  5% of 10 litres =  0.5 litres.

Let x

litres of pure milk be added . Then , 0.510+x= 2100 ⇔  2x= 30  ⇔  x= 15