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GMAT Challenge Question......confused!!

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Senior Manager
Joined: 05 Feb 2004
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GMAT Challenge Question......confused!! [#permalink]  01 Jul 2004, 05:16
Hi All, those who have taken the GMAT challenge yesterday, you must have encountered the train Problem as a DS problem:

In that we are asked what time will train B overtake train A??

Since B HAS to overtake A cant we assume that B will go in the same direction as A??
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Senior Manager
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I completely agree with you cbrf3! It does not make sense that B will be going ina different direction. You wouldn't see a question like this on the GMAT.
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I agree... I didn't even consider the fact that the train could be going in another direction, I just assumed that we could assume so.

But let's say we did know that it was going in the same direction... would there be sufficient info to solve the equation if we use both statements? i.e. if don't actually have an actual time, but we do know that one of their speeds is equal to 5/6 (?) the other's? (can't remember the exact question). Like we had no actual numbers for time and speed, but we did have relationships between the two if we used both statements... is that sufficient? Maybe the variables cancel out?
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Joined: 10 Jun 2004
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I agree as well, I think if the ETS people use a question like that one on the GMAT, it will not fair. Especially after stating that the first train is heading north, so it will be assumed that the question is asking if provided information include the any information about the time, destination or speed, not the direction.

However, the challenge was a good experience and we should thank the GMAT club team and encourage then to provide us with more
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GMAT Challenge Question......confused!!

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