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If the airspace around centrally located airports were

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Kudos [?]: 8 [0], given: 329

Re: If the airspace around centrally located airport were [#permalink]

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New post 04 Jul 2017, 01:45
[quote="imhimanshu"]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.


the prethinking initiated my e gmat is important for CR problems though the prethinked idea is not coincide with the idea in the answer choice, the prethinking process is critical important because it help us understand argument and it bring us closer to the answer. prethinking help us realize what we need to find in answer choices.

we need to do 2 processes before touching the answer.

first process: prethinking
second process: finding the answer which is close to prethinked idea.

in this problem. my prethinking is : private plains with radar cause many collision,
my finding: choice C is close to my prethinked idea. so , A is answer.
it is clear that my idea prethinked is not coincide with the idea in choice C. but prethinking is critically important to find out choice C because we see choice C are similar to prethinked idea.

Kudos [?]: 8 [0], given: 329

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Re: If the airspace around centrally located airports were [#permalink]

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New post 13 Jul 2017, 02:55
If the airspace around centrally located airports were restricted to commercial airliners and only those private planes 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

Conclusion: Reduction in mid air conclusion
Premise: Airspace = restricted = only comm/private planes with radars.
Private planes = Reduced = reduction in collision
Assumption: Private planes are without radars.


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.
They are changing the routes not because of convenience but because of safety ( Radar )

(B) Most outlying airfields are not equipped to handle commercial airline traffic.
Well we are talking about an assumption of collision of flights and not the handling.

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

(D) Commercial airliners are at greater risk of becoming involved in midair collisions than are private planes.
Who is at a greater risk is not ou concern. Why the reduction happened is our concern.

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

Kudos [?]: 9 [0], given: 22

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If the airspace around centrally located airports were [#permalink]

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New post 06 Aug 2017, 05:26
If the airspace around centrally located airports were restricted to commercial airliners and only those private planes 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?

conclusion drawn in the first sentence - most of the private-plane traffic would be forced to use outlying airfields

(A) Outlying airfields would be as convenient as centrally located airports for most pilots of private planes.
As per the above argument, most of the private-plane traffic would be forced (they have no choice or any other possible option) to use outlying airfields due to the restriction of the airspace around centrally located airports to only those private planes, which are equipped with radar. It does not talk about whether the outlying airfield would be as convenient as centrally located airports or not. Thus, this option is incorrect.
Convenience related to airfield usage is not talked about in the argument, so is irrelevant as we cannot comment on that.
The conclusion need not assume that outlying airfields are convenient for private planes, since the restrictions would give planes (that are not radar equipped) any/no choice.


(B) Most outlying airfields are not equipped to handle commercial-airline traffic.
Negate - Most outlying airfields are equipped to handle commercial-airline traffic.
As per the premise, the centrally located airports should be restricted to commercial airliners and private planes equipped with radar.
So, it does not matter even if the outlying airfields are equipped to handle commercial-airliners because commercial airliners will still be using the centrally located airports. The negation does not break the argument and the argument stands as it is. Therefore, this option statement is not an assumption.


(C) Most private planes that use centrally located airports are not equipped with radar.
Negate - Most private planes that use centrally located airports are equipped with radar.
This negation will break the conclusion of the first statement, if most of the private planes are equipped with radar, then most of them will be using the central located airport and not the outlying airfields. (most of the private-plane traffic would be forced to use outlying airfields).
Therefore, this is the assumption.


(D) Commercial airliners are at greater risk of becoming involved in midair collisions than are private planes.
This cannot be the assumption for the first statement. Also, this option statement goes against the main conclusion of this argument.

(E) A reduction in the risk of midair collision would eventually lead to increases in commercial airline traffic
Firstly, this is talking about the future, which may or may not be true to happen.
Secondly, this option statement does not provide a missing gap between the premise and the conclusion in the first statement.


Also, options B, D and E, which deal with commercial planes and with risk of midair collision, need not be assumed. As the conclusion of the first statement deals with the volume of the private-planes traffic and not with the mid air collision or the commercial planes.
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Regards,
Varun


Trying my best..... will succeed definitely! :)

The Moment You Think About Giving Up, Think Of The Reason Why You Held On So Long.
+1 Kudos if you find this post helpful. :)

Do Check OG 2017 SC Solutions - http://gmatwithcj.com/solutions-gmat-official-guide-2017-sentence-correction-questions/

Kudos [?]: 6 [0], given: 135

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Re: If the airspace around centrally located airports were [#permalink]

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New post 29 Sep 2017, 04:16
1. Convenience was never an issue.
2. out of context.
3. this is the correct answer because in the question it is stated that there will be a reduction in air traffic as those without radar won't be allowed to land.
4. out of context.
5. out of context

Kudos [?]: 17 [0], given: 45

Re: If the airspace around centrally located airports were   [#permalink] 29 Sep 2017, 04:16

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