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John can mow a field in 6 hours.  Bill can mow a field in 5 hours.  Henry can mow a field in 4 hours.  Joe can mow a field in 3 hours.  Tom can mow a field in 2 hours.  If they all work together at their respective rates, how long will it take to mow the field?

发布日期:2022-07-18

John can mow a field in 6 hours.  Bill can mow a f...
A

41.4 minutes.

B

39.4 minutes.

C

40.4 minutes.

D

38.4 minutes.

标签: john mow field hours bill

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此试题出现在

全国大学生英语竞赛(NECCS)

系列之三:C类

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