144 litres of rose water are combined with 48 litres of glycerin. A total of D litres of the mixture is removed, and 32 litres of glycerin and 48 litres of rose water are then mixed in. Find the amount of the mixture that is removed, the final combination contains 30% glycerin.
1
10 litres
2
32 litres
3
24 litres
4
40 litres