A vessel contains 2.5 litres of water and 10 litres of milk. 20% of the contents of the vessel are removed. To the remaining contents, x litres of water is added to reverse the ratio of water and milk. Then y litre of milk is added again to reverse the ratio of water and milk. Find y.

Options

A. A)128
B. B)120
C. C)60
D. D)30