8 litres are drawn from a cask full of wine and is then filled with water. This operation is performed three more times. The ratio of the quantity of wine now left in cask to that of the water is 16 : 65. How much wine the cask hold originally?
A) 18 litres
B) 24 litres
C) 32 litres
D) 42 litres
Answer: B) 24 litres
Let the quantity of the wine in the cask originally be x litres Then, quantity of wine left in cask after 4 operations =litres
A Container has a capacity of 48 litres and is full of milk. 4 liters of milk is taken out of it and replaced by same quantity of water. Again 4 liters of the mixture is taken out and replaced by the same quantity of water . The process is repeated five times. How much milk is left in the mixture ?