英语翻译
问题描述：
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
答
有个码头,夜班工人的工作效率是白班的3/4.假如夜班工人数目是白班工人数目的4/5,那么每天白班工人的工作量占全部工人工作量的几分之几?
每天夜班工人工作量是白班工人的(3/4)×(4/5) = 3/5
因此白班工人工作量占比为5/(3+5) = 5/8