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# Inbound vs Outbound:

Author Message
Manager
Joined: 09 Oct 2008
Posts: 93
It takes a train 20 minutes to go from station A to station [#permalink]

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12 Oct 2008, 06:08
It takes a train 20 minutes to go from station A to station B. How long does it take the train to return from station B to station A?

A:The average speed of the train on the outbound route is half its speed on the inbound route
B:The distance between the stations is 10 miles

* How to decide what is outbound route and inboud route?
* Can we assume A-B is outbound and B-A is inboud route?

Thanks
SVP
Joined: 29 Aug 2007
Posts: 2427

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12 Oct 2008, 07:45
vishalgc wrote:
It takes a train 20 minutes to go from station A to station B. How long does it take the train to return from station B to station A?

A:The average speed of the train on the outbound route is half its speed on the inbound route
B:The distance between the stations is 10 miles

* How to decide what is outbound route and inboud route?
* Can we assume A-B is outbound and B-A is inboud route?

Thanks

Nothing is clear about which is inbound and outbound. so E.
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Manager
Joined: 09 Oct 2008
Posts: 93

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12 Oct 2008, 08:00
OA was A

I think today is not my day.... where ever I applied special logic I was wrong

again this is from very higly reputed source ..

Thanks
VP
Joined: 17 Jun 2008
Posts: 1288

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12 Oct 2008, 11:36
vishalgc wrote:
It takes a train 20 minutes to go from station A to station B. How long does it take the train to return from station B to station A?

A:The average speed of the train on the outbound route is half its speed on the inbound route
B:The distance between the stations is 10 miles

* How to decide what is outbound route and inboud route?
* Can we assume A-B is outbound and B-A is inboud route?

Thanks

Even i got A
But yes after reading through ur query i got confused .
Anyways i dont expect such questions in GMAT

again its not logical to get confused about outbound vs inbound!!the word return in question must be the clue !!
we want to solve quant why we got understand english here too i never get this
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cheers
Its Now Or Never

VP
Joined: 30 Jun 2008
Posts: 1007

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12 Oct 2008, 11:43
vishalgc wrote:
It takes a train 20 minutes to go from station A to station B. How long does it take the train to return from station B to station A?

A:The average speed of the train on the outbound route is half its speed on the inbound route
B:The distance between the stations is 10 miles

* How to decide what is outbound route and inboud route?
* Can we assume A-B is outbound and B-A is inboud route?

Thanks

luckily this is DS. It wont matter that much (which is inbound which is outbound)

We know time taken for one part of the journey.

From A We know the relation between the speeds of both the parts of the journey. So we can obviously determine the time taken for second part of the journey
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"You have to find it. No one else can find it for you." - Bjorn Borg

SVP
Joined: 29 Aug 2007
Posts: 2427

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12 Oct 2008, 12:03
vishalgc wrote:
OA was A

I think today is not my day.... where ever I applied special logic I was wrong

again this is from very higly reputed source ..

Thanks

If A to B is outbound, then B to A is inbound and it takes 10 minuets.
If B to A is outbound, then A to B is inbound and it takes 10 minuets.

so its not sure from statement 1.

What is the source of this question?
_________________

Gmat: http://gmatclub.com/forum/everything-you-need-to-prepare-for-the-gmat-revised-77983.html

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VP
Joined: 30 Jun 2008
Posts: 1007

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12 Oct 2008, 12:04
GMAT TIGER wrote:
vishalgc wrote:
OA was A

I think today is not my day.... where ever I applied special logic I was wrong

again this is from very higly reputed source ..

Thanks

What is the source of this question?

I think this one is from the Gmatclub tests
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"You have to find it. No one else can find it for you." - Bjorn Borg

Re: Inbound vs Outbound:   [#permalink] 12 Oct 2008, 12:04
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# Inbound vs Outbound:

Moderator: Bunuel

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