Discussion Forum



1)

From a 100 litres mixture containing water and milk in equal proportion, 10 litres of mixture is replaced by 10 litres of water in succession, twice.At the end, what is the ratio of milk and water?


A) 81 : 119

B) 9 : 11

C) 40 : 60

D) 41 : 59

Answer:

Option A

Explanation:

Initialy, water =milk =50 litres

First replacement:

Water=55 litres and milk=45 litres

Second replacement:

Water=55-5.5+10=59.5, Milk=45-4.5=40.5

Ratio of milk : water =40.5 : 59.5 =81 : 119