Question

5) how many litres of water must be added to 16 liters of milk and water containing 10% water to make it 20% water in it?

Answer 1

Answer:

2litres of water must be added.

Step-by-step explanation:

in 16 litres of milk, 14.4 litres is pure milk + 1.6 litres water

next scenario, water percentage must be 20%, hence pure milk must be 80%.. since there is no change in the pure milk quantity, 80% represent 14.4litres... therefore, 20% represent 3.6litres...

therefore, excess quantity of milk added is (3.6-1.6)=2litres