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

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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

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
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

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
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

在一个码头,每个工人夜班的工作效率是白班的3/4。如果夜班工人人数是白班工人人数的4/5,两班工人共同完成装货任务,白班工人完成了其中的多少?
答案是C

有一个码头,每个工人晚上装载的箱子的效率是白天装载箱子的3/4,如果晚上的工人人数是白天工人的4/5,那么白天的装载总量占全部的百分比是多少?
假设工人白天装载箱子的效率为X,那么晚上的效率为(3/4)X
假设工人白天工人的人数是Y, 那么晚上的人数为(4/5)Y
所以白天装箱的总量是XY, 晚上装箱的总量是(3/4)X*(4/5)Y=3/5XY
所以白天占全部的百...

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有一个码头,每个工人晚上装载的箱子的效率是白天装载箱子的3/4,如果晚上的工人人数是白天工人的4/5,那么白天的装载总量占全部的百分比是多少?
假设工人白天装载箱子的效率为X,那么晚上的效率为(3/4)X
假设工人白天工人的人数是Y, 那么晚上的人数为(4/5)Y
所以白天装箱的总量是XY, 晚上装箱的总量是(3/4)X*(4/5)Y=3/5XY
所以白天占全部的百分比是XY/(XY+3/5XY)=5/8
所以答案是E

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