In a mixture, the ratio between milk and water is 8 : 1. If 18 litres of mixtures is removed and 4 litres of water is added, then the quantity of milk is 24 litres more than that of water. Find the initial quantity of milk in the mixture.
1
56 litres
2
48 litres
3
40 litres
4
42 litres
5
64 litres