the latter way 點解?

The latest option/ way

後面的;後半的;末了的
This latter point was of great importance.

(兩者中)後者的
Here are Tom and David; the latter is my brother.


http://hk.dictionary.yahoo.com/search.html?q=1&s=latter

The latter (way) - 後者的(方式)
其實這是一答案式的片語 - 例:
What would you choose between apple and orange?
I will take the latter one (我選後者, 即orange)

之前既方法