题库搜索>数据充分DS-12672
If two copying machines work simultaneously at their respective constant rates, how many copies do they produce in 5 minutes?
(1) One of the machines produces copies at the constant rate of 250 copies per minute.
(2) One of the machines produces copies at twice the constant rate of the other machine.
分析A选项
分析B选项
分析C选项
分析D选项
分析E选项
我有更好的解析 
暂无雷哥网文字解析
2台机器有各自的运行速度
（1）其中一个250份/分钟
（2）其中一个是另外一个的速度的2倍
很明显单独无法判断，联立，由于one of 中的one 并不止同一个 所以无法判断250的那个机器是快是慢，无法判断，所以只能选E
小良冠二郎
a和b的machine都有可能在指同一部...
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2023-03-10 19:17:22
247253dzyu
这是真题？？
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2022-12-24 02:22:47
326355hxwz
这是考法文还是数学
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2021-08-25 16:50:32
Crystal
题目看清楚是they
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2017-11-26 21:37:06
wuboyang
这就是文字游戏。。
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2017-07-16 15:20:31
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