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Senior Manager
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If two copying machines work simultaneously at their [#permalink]
 23 Feb 2005, 20:31
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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.
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Director
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E. It is a trick question. Think about it you will figure out.
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Senior Manager
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E it is - and not C - which might have been a forced conclusion.
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Manager
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my answer is E
a) know information about the other machine unsuff
b) unsuff either
Together from b can be 2 variants 500 or 125 copies per minute for the second machine
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Manager
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E
as we dont know have any clue of which perform what
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Manager
Joined: 01 Jan 2005
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another E.
I) the rate of one machine is not enough to calculate .
II) this info alone is not enough
I) & II) We don't know which of the following 2 cases:-
250 & 500
125 & 250
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Manager
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Should be E as we don't know which one is greater
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Intern
Joined: 20 Dec 2004
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is it E because the machine referred to in B could be the one referred to in A or the other machine?
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close
