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Machine A produces pencils at a constant rate of 9000

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Manager
Joined: 17 Jan 2006
Posts: 92
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Machine A produces pencils at a constant rate of 9000 [#permalink]

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03 Jun 2006, 23:26
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

Machine A produces pencils at a constant rate of 9000 pencils per hour, and machine B produces pencils at a constant rate of 7000 pencils per hour. If the two machine together must produce 100,000 pencils and if each machine can operate for at most 8 hours, what is the least amount of time, in hours, that machine B must operate?
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Manager
Joined: 09 May 2006
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Location: Bangalore, India
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Re: GMATPREP : machine B [#permalink]

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04 Jun 2006, 00:32
dinesh8 wrote:
Machine A produces pencils at a constant rate of 9000 pencils per hour, and machine B produces pencils at a constant rate of 7000 pencils per hour. If the two machine together must produce 100,000 pencils and if each machine can operate for at most 8 hours, what is the least amount of time, in hours, that machine B must operate?
4
4(2/3)
5(1/3)
6
6(1/4)

http://www.gmatclub.com/phpbb/viewtopic ... ht=pencils
Manager
Joined: 17 Jan 2006
Posts: 92
Followers: 1

Kudos [?]: 10 [0], given: 0

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04 Jun 2006, 01:09
oops sorry...accidently posted this question
this is an easy one.
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