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#Top150 CR: Vector airlines will purchase many of the new aircrafts

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#Top150 CR: Vector airlines will purchase many of the new aircrafts  [#permalink]

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New post 09 Dec 2015, 22:08
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Vector airlines will purchase many of the new aircrafts capable of carrying more than 500 passengers on transantlantic and transoceanic flights. These airlines currently rely on "hub and spoke" systems of routing, in which large planes, which can seat 400 people and are capable of transoceanic flight, fly into hubs that have runways sufficiently long to handle them. From there, passenegers are dispatched to local airports on connecting flights, on small planes. With takeoff and landing time slots almost completely booked at most hubs, and little new construction expected, airlines will want to expand the volume of passengers they can fly in a given time slot.

The argument above would be most weakened if which of the following were true?

A. The new 500 seat aircraft cost more per seat than existing aircraft.

B. Air traffic control systems at most hub airports cannot handle any more flights per hour than they currently do.

C. The new 500 seat aircraft require boarding times substantially longer than those of existing aircraft.

D. Small passenger aircraft, capable of efficient transcontinental and transoceanic flight and able to land on short runways, have come into service.

E. Transoceanic air flights are currently running at near maximum capacity

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Re: #Top150 CR: Vector airlines will purchase many of the new aircrafts  [#permalink]

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New post 10 Dec 2015, 06:02
IMO answer is 'C'. Pls advise

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Re: #Top150 CR: Vector airlines will purchase many of the new aircrafts  [#permalink]

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New post 11 Dec 2015, 08:23
I have also chosen C since I think the conclusion is " Airline will purchase many new aircraft capable to carry 500 odd passengers"

The basis for conclusion is: The current capacity is almost full & no relief in the near future is anticipated w.r.t to augmentation of infrastructure. Hence, any airline will want to maximize the number of passengers flown in a given time slot.

To weaken this: If it takes more time to board the plane then it considerably increases the time on land of the new aircraft & hence the plan may fail.

Souvik Can you please help in deconstructing the argument.
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Re: #Top150 CR: Vector airlines will purchase many of the new aircrafts  [#permalink]

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New post 12 Dec 2015, 01:22
souvik101990 wrote:
Vector airlines will purchase many of the new aircrafts capable of carrying more than 500 passengers on transantlantic and transoceanic flights. These airlines currently rely on "hub and spoke" systems of routing, in which large planes, which can seat 400 people and are capable of transoceanic flight, fly into hubs that have runways sufficiently long to handle them. From there, passenegers are dispatched to local airports on connecting flights, on small planes. With takeoff and landing time slots almost completely booked at most hubs, and little new construction expected, airlines will want to expand the volume of passengers they can fly in a given time slot.

The argument above would be most weakened if which of the following were true?

A. The new 500 seat aircraft cost more per seat than existing aircraft.

B. Air traffic control systems at most hub airports cannot handle any more flights per hour than they currently do.

C. The new 500 seat aircraft require boarding times substantially longer than those of existing aircraft.

D. Small passenger aircraft, capable of efficient transcontinental and transoceanic flight and able to land on short runways, have come into service.

E. Transoceanic air flights are currently running at near maximum capacity


IMHO (C) souvik101990 plz provide us the explanation..
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Re: #Top150 CR: Vector airlines will purchase many of the new aircrafts  [#permalink]

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New post 12 Dec 2015, 02:09
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Hi, Guys,

My first post here, so hope for the Kudos. Question was easy and I am detailing the thought process below

Vector airlines will purchase many of the new aircrafts capable of carrying more than 500 passengers on transantlantic and transoceanic flights. These airlines currently rely on "hub and spoke" systems of routing, in which large planes, which can seat 400 people and are capable of transoceanic flight, fly into hubs that have runways sufficiently long to handle them. From there, passenegers are dispatched to local airports on connecting flights, on small planes. With takeoff and landing time slots almost completely booked at most hubs, and little new construction expected, airlines will want to expand the volume of passengers they can fly in a given time slot.

Summary in your own words - Hub and spoke model, High demand for flights. No additional capacity in infrastructure is possible.

The argument above would be most weakened if which of the following were true?

A. The new 500 seat aircraft cost more per seat than existing aircraft.

Redundant - cost is not discussed in the para anywhere

B. Air traffic control systems at most hub airports cannot handle any more flights per hour than they currently do.

Given data - No new infrastructure is being added. Hence airlines are willing to replace 400 sear aircraft with 500

C. The new 500 seat aircraft require boarding times substantially longer than those of existing aircraft.

No mention of boarding time anywhere in the passage as a bottleneck
D. Small passenger aircraft, capable of efficient transcontinental and transoceanic flight and able to land on short runways, have come into service.

Hub and spoke model only exist, because small passenger aircraft cannot have efficient transcontinental and transoceanic flight

If this is true than it weakens the argument.

E. Transoceanic air flights are currently running at near maximum capacity

It supports the argument that airlines should increase capacity to meet demand
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Re: #Top150 CR: Vector airlines will purchase many of the new aircrafts  [#permalink]

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New post 13 Mar 2016, 14:46
still have serious confusion between choices c and d
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Re: #Top150 CR: Vector airlines will purchase many of the new aircrafts  [#permalink]

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New post 01 Oct 2016, 05:20
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souvik101990 wrote:
Vector airlines will purchase many of the new aircrafts capable of carrying more than 500 passengers on transantlantic and transoceanic flights. These airlines currently rely on "hub and spoke" systems of routing, in which large planes, which can seat 400 people and are capable of transoceanic flight, fly into hubs that have runways sufficiently long to handle them. From there, passenegers are dispatched to local airports on connecting flights, on small planes. With takeoff and landing time slots almost completely booked at most hubs, and little new construction expected, airlines will want to expand the volume of passengers they can fly in a given time slot.

The argument above would be most weakened if which of the following were true?

A. The new 500 seat aircraft cost more per seat than existing aircraft.

B. Air traffic control systems at most hub airports cannot handle any more flights per hour than they currently do.

C. The new 500 seat aircraft require boarding times substantially longer than those of existing aircraft.

D. Small passenger aircraft, capable of efficient transcontinental and transoceanic flight and able to land on short runways, have come into service.

E. Transoceanic air flights are currently running at near maximum capacity


Conclusion:
With takeoff and landing time slots almost completely booked at most hubs, and little new construction expected, airlines will want to expand the volume of passengers they can fly in a given time slot


A. The new 500 seat aircraft cost more per seat than existing aircraft. - Nothing said about cost

C. The new 500 seat aircraft require boarding times substantially longer than those of existing aircraft. - Even if boarding time is more per flight, the boarding time for smaller multiple flights to accommodate same number of passengers may be more, resulting in higher number of slots being occupied, so bigger planes might still be desirable

E. Transoceanic air flights are currently running at near maximum capacity. - Even if true, bigger planes substituted for smaller flights may allow for more capacity

D. Small passenger aircraft, capable of efficient transcontinental and transoceanic flight and able to land on short runways, have come into service. - CORRECT - since smaller flights are able to use the NON-HUB airports hence the flights are no longer constrained by the time slots of the HUB airports, hence expansion of volume of passenger is not required.

B. Air traffic control systems at most hub airports cannot handle any more flights per hour than they currently do. - Good Wrong answer - Again this restriction can be overcome by substituting Bigger flights for smaller flights (the implicit wrong assumption we usually make for deeming this option as correct is that, bigger flights will increase the current traffic, whereas bigger flights can simply replace smaller flights, resulting in no change in traffic. Hence. the small time slots can accommodate more passengers, thereby strengthening the answer)
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Re: #Top150 CR: Vector airlines will purchase many of the new aircrafts  [#permalink]

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New post 20 Dec 2016, 19:02
Question Type: Weaken / Cause - Effect.
Objective: Weaken Assumptions.

Premise: Airlines currently rely on "hub and spoke" systems of routing,
Premise: Can seat 400 people and are capable of transoceanic flight,
Premise: Takeoff and landing time slots almost completely booked little new construction expected,
Premise: Airlines will want to expand the volume of passengers they can fly in a given time slot.

Assumption: Only way to expand volume of passengers is larger planes
Assumption: Vector only looking at 'hub and spoke' system of routing

Conclusion: Vector will purchase aircrafts carrying more than 500 passengers on transantlantic and transoceanic flights.

Answer Review:
A. The new 500 seat aircraft cost more per seat than existing aircraft. - Out of scope. Doesn't affect assumptions.

B. Air traffic control systems at most hub airports cannot handle any more flights per hour than they currently do. - Restated fact. Doesn't affect assumptions.

C. The new 500 seat aircraft require boarding times substantially longer than those of existing aircraft. - Out of Scope. Doesn't affect assumptions.

D. Small passenger aircraft, capable of efficient transcontinental and transoceanic flight and able to land on short runways, have come into service. - New information. Affects assumptions. Weakens argument. Correct answer.

E. Transoceanic air flights are currently running at near maximum capacity. - Restated fact. Doesn't affect assumptions.
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Re: #Top150 CR: Vector airlines will purchase many of the new aircrafts  [#permalink]

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New post 12 Mar 2017, 04:20
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subhrojitc wrote:
Please explian why not C?
The question indicates that the takeoff and landing slots are booked (takeoff and landing time slots almost completely booked at most hubs), and option C says the new 500 seat aircraft require boarding times substantially longer than those of existing aircraft.

The airlines want to increase the "volume of passengers they can fly in a given time slot". Here the restriction is on the takeoff and landing slots. Boarding presumably does not affect those (unless the boarding process takes longer than the difference between the landing and takeoff slots, but that is not given). With the given volume of traffic at the hubs, the slots are booked, but nothing suggests that an airplane cannot stay at a hub for the boarding of a greater number of passengers. Option C therefore gives us no strong reason to believe that the airlines will not go for the bigger planes. They have no other way to increase the volume of passengers.

In other words, for us to mark C, we would also have assume that the new boarding time will significantly affect a plane's turnaround time. That's a little iffy. D is far more straightforward.

Additionally, and I don't know whether we should really press this point, "hub and spoke" is defined as:
Quote:
systems of routing, in which large planes, which can seat 400 people and are capable of transoceanic flight, fly into hubs that have runways sufficiently long to handle them. From there, passengers are dispatched to local airports on connecting flights, on small planes
If we stick to this definition, we cannot assume that the boarding happens at a hub at all. The planes fly into hubs, from where passengers get on small planes. Where does the boarding happen, because we don't know whether the process works in reverse? :)
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Re: #Top150 CR: Vector airlines will purchase many of the new aircrafts  [#permalink]

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New post 12 Mar 2017, 10:10
AjiteshArun wrote:
subhrojitc wrote:
Please explian why not C?
The question indicates that the takeoff and landing slots are booked (takeoff and landing time slots almost completely booked at most hubs), and option C says the new 500 seat aircraft require boarding times substantially longer than those of existing aircraft.

The airlines want to increase the "volume of passengers they can fly in a given time slot". Here the restriction is on the takeoff and landing slots. Boarding presumably does not affect those (unless the boarding process takes longer than the difference between the landing and takeoff slots, but that is not given). With the given volume of traffic at the hubs, the slots are booked, but nothing suggests that an airplane cannot stay at a hub for the boarding of a greater number of passengers. Option C therefore gives us no strong reason to believe that the airlines will not go for the bigger planes. They have no other way to increase the volume of passengers.

In other words, for us to mark C, we would also have assume that the new boarding time will significantly affect a plane's turnaround time. That's a little iffy. D is far more straightforward.

Additionally, and I don't know whether we should really press this point, "hub and spoke" is defined as:
Quote:
systems of routing, in which large planes, which can seat 400 people and are capable of transoceanic flight, fly into hubs that have runways sufficiently long to handle them. From there, passengers are dispatched to local airports on connecting flights, on small planes
If we stick to this definition, we cannot assume that the boarding happens at a hub at all. The planes fly into hubs, from where passengers get on small planes. Where does the boarding happen, because we don't know whether the process works in reverse? :)

Hi Ruled out C for the exact same reason. However, option b states that the number of flights in operation at hub is limited by the ATC. What if we get more passengers in the flight to hub but don't have enough planes for the subsequent journey. I thin B is a weakener. Please explain
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Re: #Top150 CR: Vector airlines will purchase many of the new aircrafts  [#permalink]

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New post 13 Mar 2017, 09:00
AjiteshArun wrote:
subhrojitc wrote:
Please explian why not C?
The question indicates that the takeoff and landing slots are booked (takeoff and landing time slots almost completely booked at most hubs), and option C says the new 500 seat aircraft require boarding times substantially longer than those of existing aircraft.

The airlines want to increase the "volume of passengers they can fly in a given time slot". Here the restriction is on the takeoff and landing slots. Boarding presumably does not affect those (unless the boarding process takes longer than the difference between the landing and takeoff slots, but that is not given). With the given volume of traffic at the hubs, the slots are booked, but nothing suggests that an airplane cannot stay at a hub for the boarding of a greater number of passengers. Option C therefore gives us no strong reason to believe that the airlines will not go for the bigger planes. They have no other way to increase the volume of passengers.

In other words, for us to mark C, we would also have assume that the new boarding time will significantly affect a plane's turnaround time. That's a little iffy. D is far more straightforward.

Additionally, and I don't know whether we should really press this point, "hub and spoke" is defined as:
Quote:
systems of routing, in which large planes, which can seat 400 people and are capable of transoceanic flight, fly into hubs that have runways sufficiently long to handle them. From there, passengers are dispatched to local airports on connecting flights, on small planes
If we stick to this definition, we cannot assume that the boarding happens at a hub at all. The planes fly into hubs, from where passengers get on small planes. Where does the boarding happen, because we don't know whether the process works in reverse? :)


hello sir ,
thanks for the above clarification about option c , however can you explain how does option D weakness the argument
thanks in advance
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Re: #Top150 CR: Vector airlines will purchase many of the new aircrafts  [#permalink]

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New post 27 Jan 2018, 09:40
Should be C because if there are airplanes that can do the tasks of the larger airplanes and can work with a shorter runway, then why'd I buy a larger one?
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New post 27 Jan 2018, 21:13
A and E are OFS.
B is a strengthener.
C is not good enough b/c C may weaken the argument, but in C, the new planes may have other benefits that outweigh the disadvantages.
D is actually an assumption. D tells that the new planes will not be able to compete against small planes.
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Re: #Top150 CR: Vector airlines will purchase many of the new aircrafts  [#permalink]

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New post 21 Jun 2018, 09:13
IshanVirdhi wrote:
AjiteshArun wrote:
subhrojitc wrote:
Please explian why not C?
The question indicates that the takeoff and landing slots are booked (takeoff and landing time slots almost completely booked at most hubs), and option C says the new 500 seat aircraft require boarding times substantially longer than those of existing aircraft.

The airlines want to increase the "volume of passengers they can fly in a given time slot". Here the restriction is on the takeoff and landing slots. Boarding presumably does not affect those (unless the boarding process takes longer than the difference between the landing and takeoff slots, but that is not given). With the given volume of traffic at the hubs, the slots are booked, but nothing suggests that an airplane cannot stay at a hub for the boarding of a greater number of passengers. Option C therefore gives us no strong reason to believe that the airlines will not go for the bigger planes. They have no other way to increase the volume of passengers.

In other words, for us to mark C, we would also have assume that the new boarding time will significantly affect a plane's turnaround time. That's a little iffy. D is far more straightforward.

Additionally, and I don't know whether we should really press this point, "hub and spoke" is defined as:
Quote:
systems of routing, in which large planes, which can seat 400 people and are capable of transoceanic flight, fly into hubs that have runways sufficiently long to handle them. From there, passengers are dispatched to local airports on connecting flights, on small planes
If we stick to this definition, we cannot assume that the boarding happens at a hub at all. The planes fly into hubs, from where passengers get on small planes. Where does the boarding happen, because we don't know whether the process works in reverse? :)

Hi Ruled out C for the exact same reason. However, option b states that the number of flights in operation at hub is limited by the ATC. What if we get more passengers in the flight to hub but don't have enough planes for the subsequent journey. I thin B is a weakener. Please explain


According to question 'takeoff and landing time slots almost completely booked at most hubs'. So this means that the number of flights in operation at hub is limited by the ATC.
So basically option B does not give any extra information to weaken the given statement. So it is not the answer, we are looking for.
Re: #Top150 CR: Vector airlines will purchase many of the new aircrafts &nbs [#permalink] 21 Jun 2018, 09:13
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