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it takes twice as much as time to travel from City A to City

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Manager
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it takes twice as much as time to travel from City A to City [#permalink] New post 22 May 2004, 06:28
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it takes twice as much as time to travel from City A to City C by bus as by train. How long, in kilometers, does the bus take from City A to City C?

(1) The train averages 85 kilometers per hour and takes 2.5 hours to travel from City A to City C.
(2) The bus average 45 kilometers per hour.
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Re: DS_10_19 [#permalink] New post 22 May 2004, 13:29
becoolja wrote:
it takes twice as much as time to travel from City A to City C by bus as by train. How long, in kilometers, does the bus take from City A to City C?

(1) The train averages 85 kilometers per hour and takes 2.5 hours to travel from City A to City C.
(2) The bus average 45 kilometers per hour.


The answer is C

The question doesn't tell you that the train and the bus travel the same path, so statement (1) is not sufficient.

Statement (2) by itself is obviously insufficient

You know that the bus takes twice as long as the train. According to statement (1), the bus takes 5 hours. Since statement (2) gives you the bus's rate. Therefore both of them combined give you the answer.
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 [#permalink] New post 23 May 2004, 18:46
Sofere is right!! The key point is that the bus and the train normally have their own different routes :-)
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  [#permalink] 23 May 2004, 18:46
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it takes twice as much as time to travel from City A to City

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