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Train service suffers when a railroad combines commuter and

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Train service suffers when a railroad combines commuter and [#permalink]

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New post 16 Jun 2010, 13:32
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Question Stats:

51% (01:30) correct 49% (01:20) wrong based on 291 sessions

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Train service suffers when a railroad combines commuter and freight service. By dividing its attention between its freight and commuter customers, a railroad serves neither particularly well. Therefore, if a railroad is going to be a successful business, then it must concentrate exclusively on one of these two markets.

For the argument to be logically correct, it must make which one of the following assumptions?

(A) Commuter and freight service have little in common with each other.
(B) The first priority of a railroad is to be a successful business.
(C) Unless a railroad serves its customers well, it will not be a successful business.
(D) If a railroad concentrates on commuter service, it will be a successful business.
(E) Railroad commuters rarely want freight service as well.

Source: LSAT
[Reveal] Spoiler: OA

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Last edited by broall on 21 Sep 2017, 08:07, edited 1 time in total.
Reformatted question

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Re: Train service suffers when a railroad combines commuter and [#permalink]

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New post 16 Jun 2010, 22:29
IMO A. If Commuter and freight service had been common then the customers will be served well. Can anyone explain why the OA is C?

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Re: Train service suffers when a railroad combines commuter and [#permalink]

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New post 16 Jun 2010, 23:02
Because the text does not mention how much the two services have in common, while choice A says that they have little in common...this assumption goes too far, since they could have a lot in common but a few differences that make it difficult to serve both.

C is perfect, since the text states that if they serve both they cannot serve them well, therefore they have to serve only one to be successful. This means that to be successful they must serve them well.

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Re: Train service suffers when a railroad combines commuter and [#permalink]

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New post 17 Jun 2010, 02:35
toshio86 wrote:
Because the text does not mention how much the two services have in common, while choice A says that they have little in common...this assumption goes too far, since they could have a lot in common but a few differences that make it difficult to serve both.

C is perfect, since the text states that if they serve both they cannot serve them well, therefore they have to serve only one to be successful. This means that to be successful they must serve them well.


you can bring new info when dealing with assumptions slick

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Re: Train service suffers when a railroad combines commuter and [#permalink]

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New post 20 Jun 2010, 14:54
Can E be consider a better choice than others as if we negate E than, railroad commuters will want freight service and thus we cannot focus extensively on one of the markets?
Please correct me if my reasoning is wrong.

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Re: Train service suffers when a railroad combines commuter and [#permalink]

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New post 20 Jun 2010, 15:02
I narrowed it to C and E but picked E.

Can someone explain why E is incorrect?

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Re: Train service suffers when a railroad combines commuter and [#permalink]

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New post 20 Jun 2010, 15:05
If we negate E..... Railroad commuters mostly want freight service as well.

The conclusion..."Railroads must concentrate exclusively on one of these two markets"......falls apart..

explanations are welcome.

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Re: Train service suffers when a railroad combines commuter and [#permalink]

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New post 20 Jun 2010, 21:22
Everyone is talking about Negation. let me try as well -
Negation A : (A) Commuter and freight service have EVERYTHING in common with each other. still need to explain the "success"

Now negate C. Negation (C) Unless a railroad DOES NOT serves its customers well, it will not be a successful business. >> Sounds like free lunch. yeah :-)

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Re: Train service suffers when a railroad combines commuter and [#permalink]

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New post 21 Jun 2010, 04:57
Train service suffers when a railroad combines commuter and freight service. By dividing its attention between its freight and commuter customers, a railroad serves neither particularly well. Therefore, if a railroad is going to be a successful business, then it must concentrate exclusively on one of these two markets.
For the argument to be logically correct, it must make which one of the following assumptions?
Using the Causal Effect. The assumption highlights that the cause( serving one customer well) is the only cause for the effect ( sucessful business)

(A) Commuter and freight service have little in common with each other.so ?
(B) The first priority of a railroad is to be a successful business.priority is not being talked about
(C) Unless a railroad serves its customers well, it will not be a successful business.yes
(D) If a railroad concentrates on commuter service, it will be a successful business.no
(E) Railroad commuters rarely want freight service as well.no . Basically any one of two should be well served
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Re: Train service suffers when a railroad combines commuter and [#permalink]

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Re: Train service suffers when a railroad combines commuter and [#permalink]

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New post 09 Oct 2017, 11:55
Hello from the GMAT Club VerbalBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

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Re: Train service suffers when a railroad combines commuter and [#permalink]

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New post 02 Nov 2017, 00:04
noboru wrote:
Train service suffers when a railroad combines commuter and freight service. By dividing its attention between its freight and commuter customers, a railroad serves neither particularly well. Therefore, if a railroad is going to be a successful business, then it must concentrate exclusively on one of these two markets.

For the argument to be logically correct, it must make which one of the following assumptions?

(A) Commuter and freight service have little in common with each other.
(B) The first priority of a railroad is to be a successful business.
(C) Unless a railroad serves its customers well, it will not be a successful business.
(D) If a railroad concentrates on commuter service, it will be a successful business.
(E) Railroad commuters rarely want freight service as well.

Source: LSAT


Let me try to simplify the choice C.

Unless a railroad serves its customers well, it will not be a successful business.---> To be a successful business, railroad needs to serve its customers well. By negating this statement we get, to be a successful business, railroad DOES NOT need to serve its customers well. Is it? So, conclusion falls apart.
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Re: Train service suffers when a railroad combines commuter and   [#permalink] 02 Nov 2017, 00:04
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