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# work and rate problem

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Intern
Joined: 06 Dec 2009
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work and rate problem [#permalink]  10 Apr 2010, 18:36
25 men reap a field in 20 days . when should 15 men leave the work.if the whole field is to be reaped in 37-1/2 days after they leave the work?

A 5 days
B 10 days

I am not quite sure how to solve this. could somebody help me!
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Status: The last round
Joined: 18 Jun 2009
Posts: 1319
Concentration: Strategy, General Management
GMAT 1: 680 Q48 V34
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Re: work and rate problem [#permalink]  11 Apr 2010, 02:29
Are there only two options??

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Re: work and rate problem   [#permalink] 11 Apr 2010, 02:29
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# work and rate problem

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