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# Train service suffers when a railroad combines commuter and

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16 Jun 2010, 12:32
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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, 07:07, edited 1 time in total.
Reformatted question

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16 Jun 2010, 21:29
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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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16 Jun 2010, 22:02
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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17 Jun 2010, 01:35
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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20 Jun 2010, 13:54
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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20 Jun 2010, 14:02
I narrowed it to C and E but picked E.

Can someone explain why E is incorrect?

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20 Jun 2010, 14:05
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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20 Jun 2010, 20:22
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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21 Jun 2010, 03:57
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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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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12 Dec 2017, 20:28
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

Prem :
When a train service does both commuter and freight service, it serves neither customer particularly well.

Conc:
If a train service wants to be successful, it must concentrate exclusively on one.

I hope that when you reach the conclusion you would notice the "new guy" ... i.e., successful business?

The correct answer is going to have to define what's required of a "successful business", because that's what the conclusion is claiming and the author never gave us any rules/definitions of "successful business".

So just a quick scan eliminates (A) and (E), since they don't address the "new guy".

Why does the author think the current way ISN'T a successful business --- the only thing that sounds like a negative about the current way is that the railroad doesn't serve either customer base particularly well.

So that's the gap we need to connect: "not serving your customers well" and "not being a successful business".

(A) "little in common" is too extreme ... they could be very similar but still stretch a business too thin to treat customers well

(B) "first priority" is too extreme ... the first priority could be "don't kill any passengers" but this argument would still make sense.

(D) Not only does this arbitrarily pick commuter rather than freight, it also shifts from saying "picking one of the two" is NECESSARY to success to "picking one of the two" is SUFFICIENT for success.

(E) "rarely" is too extreme ... it wouldn't matter if commuters frequently wanted freight service also, it could still be true that a railroad does a poor job of both and thereby frustrates the same customer twice.
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13 Dec 2017, 02:05
Mahmud6 wrote:
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.

Hi Mahboob,
In option c- By customers in the passage we mean commuters only. So, even if the rail road services do not serve its customers well, but if they provide better freight services then, the railroad services can be successful. So, option C is not necessarily true. Let me know where my understanding lacks.

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13 Dec 2017, 02:58
sunny91 wrote:
Mahmud6 wrote:
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.

Hi Mahboob,
In option c- By customers in the passage we mean commuters only. So, even if the rail road services do not serve its customers well, but if they provide better freight services then, the railroad services can be successful. So, option C is not necessarily true. Let me know where my understanding lacks.

Hi sunny91,

I am not sure whether you addressed me or anyone else, namely Mahboob.

However, the passage mentions 'By dividing its attention between its freight and commuter customers, a railroad serves neither particularly well.'

By this line we can deduce that railroad has both freight customers and commuter customers. The passage does not imply by referring customers to ONLY commuter. If we take that passage refers only to community customers NOT freight customers than it becomes as following:

1. By dividing its attention between its freight, a railroad serves neither particularly well.' (Can 'freight' be a subject to be served by the railroad? No. It does not make any sense.)
AND
2. By dividing its attention between its commuter customers, a railroad serves neither particularly well.'
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13 Dec 2017, 04:50
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.[/quote]
Hi Mahboob,
In option c- By customers in the passage we mean commuters only. So, even if the rail road services do not serve its customers well, but if they provide better freight services then, the railroad services can be successful. So, option C is not necessarily true. Let me know where my understanding lacks.[/quote]

Hi sunny91,

I am not sure whether you addressed me or anyone else, namely Mahboob.

However, the passage mentions 'By dividing its attention between its freight and commuter customers, a railroad serves neither particularly well.'

By this line we can deduce that railroad has both freight customers and commuter customers. The passage does not imply by referring customers to ONLY commuter. If we take that passage refers only to community customers NOT freight customers than it becomes as following:

1. By dividing its attention between its freight, a railroad serves neither particularly well.' (Can 'freight' be a subject to be served by the railroad? No. It does not make any sense.)
AND
2. By dividing its attention between its commuter customers, a railroad serves neither particularly well.'[/quote]

Thanks Mahmud6 for the explanation. I addressed you and apologized for the inconvenience in the name. Actually Mahboob is my Boss's name

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Re: Train service suffers when a railroad combines commuter and   [#permalink] 13 Dec 2017, 04:50
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