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If the airspace around centrally located airport were

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If the airspace around centrally located airport were [#permalink] New post 13 Feb 2013, 19:37
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  15% (low)

Question Stats:

84% (02:23) correct 16% (03:07) wrong based on 66 sessions
If the airspace around centrally located airport were restricted to commercial airlines and only those private equipped with radar, most of the private-plane traffic would be forced to use outlying airfields. Such a reduction in the amount of private-plane traffic would reduce the risk of midair collision around the centrally located airports.

The conclusion drawn in the first sentence depends on which of the following assumptions?

(A)Outlying airfields would be as convenient as centrally located airports for most pilots of private planes.

(B)Most outlying airfields are not equipped to handle commercial-airline traffic.

(C)Most private planes that use centrally located airports are not equipped with radar.

(D)Commercial airlines are at greater risk of becoming involved in midair collisions than are private planes.

(E)A reduction in the risk of midair collision would eventually lead to increase in commercial airline traffic.


Can someone please detail about the Conclusion of the Argument.

Thanks
H
[Reveal] Spoiler: OA

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Re: If the airspace around centrally located airport were [#permalink] New post 13 Feb 2013, 20:04
imhimanshu wrote:
If the airspace around centrally located airport were restricted to commercial airlines and only those private equipped with radar, most of the private-plane traffic would be forced to use outlying airfields. Such a reduction in the amount of private-plane traffic would reduce the risk of midair collision around the centrally located airports.

The conclusion drawn in the first sentence depends on which of the following assumptions?

(A)Outlying airfields would be as convenient as centrally located airports for most pilots of private planes.

(B)Most outlying airfields are not equipped to handle commercial-airline traffic.

(C)Most private planes that use centrally located airports are not equipped with radar.

(D)Commercial airlines are at greater risk of becoming involved in midair collisions than are private planes.

(E)A reduction in the risk of midair collision would eventually lead to increase in commercial airline traffic.


Can someone please detail about the Conclusion of the Argument.

Thanks
H


+1C
To be noted question is "Assumptions of the conclusion drawn in the first sentence"


(A)Outlying airfields would be as convenient as centrally located airports for most pilots of private planes. -- not concerned about airfields

(B)Most outlying airfields are not equipped to handle commercial-airline traffic. -- not concerned about airfields

(C)Most private planes that use centrally located airports are not equipped with radar. -- Correct --- There is a restriction for private planes without radar, coz of this most of planes are outside airport (means most of them are without radar)

(D)Commercial airlines are at greater risk of becoming involved in midair collisions than are private planes. -- We are concerned about private planes specifically not general commercial airlines

(E)A reduction in the risk of midair collision would eventually lead to increase in commercial airline traffic. -- This is assumption of final conclusion
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Re: If the airspace around centrally located airport were [#permalink] New post 13 Feb 2013, 20:45
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imhimanshu wrote:
If the airspace around centrally located airport were restricted to commercial airlines and only those private equipped with radar, most of the private-plane traffic would be forced to use outlying airfields. Such a reduction in the amount of private-plane traffic would reduce the risk of midair collision around the centrally located airports.

The conclusion drawn in the first sentence depends on which of the following assumptions?

(A)Outlying airfields would be as convenient as centrally located airports for most pilots of private planes.

(B)Most outlying airfields are not equipped to handle commercial-airline traffic.

(C)Most private planes that use centrally located airports are not equipped with radar.

(D)Commercial airlines are at greater risk of becoming involved in midair collisions than are private planes.

(E)A reduction in the risk of midair collision would eventually lead to increase in commercial airline traffic.


Can someone please detail about the Conclusion of the Argument.

Thanks
H


First sentence: If the airspace around centrally located airport were restricted to commercial airlines and only those private equipped with radar, most of the private-plane traffic would be forced to use outlying airfields.

Conclusion of the first sentence: most of the private-plane traffic would be forced to use outlying airfields.

We need to find the assumption in this conclusion, not in the conclusion of the argument.
Here, the author is assuming that if airports do not allow non-radar private planes to enter its airspace, most private planes will not be able to enter airport airspace. This means he is assuming that most private planes do not have radar.

Answer (C).
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Re: If the airspace around centrally located airport were [#permalink] New post 13 Feb 2013, 21:43
Expert's post
imhimanshu wrote:
If the airspace around centrally located airport were restricted to commercial airlines and only those private equipped with radar, most of the private-plane traffic would be forced to use outlying airfields. Such a reduction in the amount of private-plane traffic would reduce the risk of midair collision around the centrally located airports.

The conclusion drawn in the first sentence depends on which of the following assumptions?

(A)Outlying airfields would be as convenient as centrally located airports for most pilots of private planes.

(B)Most outlying airfields are not equipped to handle commercial-airline traffic.

(C)Most private planes that use centrally located airports are not equipped with radar.

(D)Commercial airlines are at greater risk of becoming involved in midair collisions than are private planes.

(E)A reduction in the risk of midair collision would eventually lead to increase in commercial airline traffic.


Can someone please detail about the Conclusion of the Argument.

Thanks
H


Hi Himanshu,

Good question.

The question stem says that the conclusion in the first sentence. If we analyze the structure of the sentence, then we will see that the stimulus contains two opinions

i) most of the private-plane traffic would be forced to use outlying airfields.
ii) Such a reduction in the amount of private-plane traffic would reduce the risk of midair collision around the centrally located airports.

The overall structure goes like this: First part of the fist sentence is the premise for i) and i) is used as a premise for the main conclusion ii).

i) is the intermediate conclusion, which the questions stem talks about.

We have to find an assumption that the author has to make to make his claim valid. Our assumption should validate that "most of the private-plane traffic would be forced to use outlying airfields"
First sentence says "only those private equipped with radar", so, the commercial planes not equipped with radar would not be able to use the airspace around the centrally located airport. Now, if most planes do not have a radar then they will be forced to use outlaying fields, reducing the overall traffic. Answer choice (C) does is very well, others could be true, but not necessarily validate the conclusion.

Hope that helps,

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Re: If the airspace around centrally located airport were   [#permalink] 13 Feb 2013, 21:43
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