Previous Year Questions

Quantity of mixture = 60 liters

Let initial quantity of water = (60 - a) liters

Then, initial quantity of milk = a liters

When 25% mixture is replaced by water, and this process continues for two more times, then

Quantity of milk in the mixture becomes

18.9 = (100 - 25)% of (100 - 25)% of (100 - 25)% of a

a = 44.8 liters

Therefore, initial quantity of water = 60 - 44.8 = 15.2 liters