英语翻译
At a loading dock,each worker on the night crew loaded 3/4 as many boxes as
each worker on the day crew.If the night crew has 4/5 as many workers as the
day crew,what fraction of all the boxes loaded by the two crews did the day
crew load?
(A)1/2
(B)2/5
(C)3/5
(D)4/5
(E)5/8