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Crowding on Mooreville’s subway frequently leads to delays, because it

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Crowding on Mooreville’s subway frequently leads to delays, because it [#permalink]

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Crowding on Mooreville’s subway frequently leads to delays, because it is difficult for passengers to exit from the trains. Subway ridership is projected to increase by 20 percent over the next 10 years. The Metroville Transit Authority plans to increase the number of daily train trips by only 5 percent over the same period. Officials predict that this increase is sufficient to ensure that the incidence of delays due to crowding does not increase.

Which of the following, if true, provides the strongest grounds for the officials’ prediction?

(A) By changing maintenance schedules, the Transit Authority can achieve the 5 percent increase in train trips without purchasing any new subway cars.

(B) The Transit Authority also plans a 5 percent increase in the number of bus trips on routes that connect to subways.

(C) For most commuters who use the subway system, there is no practical alternative public transportation available.

(D) Most of the projected increase in ridership is expected to occur in off-peak hours when trains are now sparsely used.

(E) The 5 percent increase in the number of train trips can be achieved without an equal increase in Transit Authority operational costs.
[Reveal] Spoiler: OA

Originally posted by ttram on 16 Feb 2008, 14:30.
Last edited by hazelnut on 25 Oct 2017, 16:38, edited 1 time in total.
Edited the question.
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Re: Crowding on Mooreville’s subway frequently leads to delays, because it [#permalink]

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Conclusion: Officials predict that this increase is sufficient to ensure that the incidence of delays due to crowding does not increase.

A. By changing maintenance schedules, the Transit Authority can achieve the 5 percent increase in train trips without purchasing any new subway cars.[Purchasing is not mentioned as part of the argument – eliminate it]

B. The Transit Authority also plans a 5 percent increase in the number of bus trips on routes that connect to subways. [Bus trips is not mentioned as part of the argument – eliminate it]

C. For most commuters who use the subway system, there is no practical alternative public transportation available. [Alternative transportation system is out of scope of the sargument – eliminate it]

D. Most of the projected increase in ridership is expected to occur in off-peak hours when trains are now sparsely used. [Hold it]

E. The 5 percent increase in the number of train trips can be achieved without an equal increase in Transit Authority operational costs. [Why to discuss about operational cost – eliminate it]

Answer: D
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Re: Crowding on Mooreville’s subway frequently leads to delays, because it [#permalink]

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New post 16 Feb 2008, 18:24
hanumayamma wrote:
Conclusion: Officials predict that this increase is sufficient to ensure that the incidence of delays due to crowding does not increase.

A. By changing maintenance schedules, the Transit Authority can achieve the 5 percent increase in train trips without purchasing any new subway cars.[Purchasing is not mentioned as part of the argument – eliminate it]

B. The Transit Authority also plans a 5 percent increase in the number of bus trips on routes that connect to subways. [Bus trips is not mentioned as part of the argument – eliminate it]

C. For most commuters who use the subway system, there is no practical alternative public transportation available. [Alternative transportation system is out of scope of the sargument – eliminate it]

D. Most of the projected increase in ridership is expected to occur in off-peak hours when trains are now sparsely used. [Hold it]

E. The 5 percent increase in the number of train trips can be achieved without an equal increase in Transit Authority operational costs. [Why to discuss about operational cost – eliminate it]

Answer: D



Exactly. OA is D. But can you plz explain clearly for me why D? I also eliminate A, B, C and E. At last, I chose D, but I really do not understand why. Thanks a lot.
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Re: Crowding on Mooreville’s subway frequently leads to delays, because it [#permalink]

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ttram wrote:


Exactly. OA is D. But can you plz explain clearly for me why D? I also eliminate A, B, C and E. At last, I chose D, but I really do not understand why. Thanks a lot.


Crowding results from people waiting for their trains during peak hours (not enough trains!). The proposed plan will increase the number of train trips during peak hours to reduce the number of people waiting and hence crowd. Note that the 5% increase in train trips doesn't have to take into account 20% increase in off-peak ridership.
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Re: Crowding on Mooreville’s subway frequently leads to delays, because it [#permalink]

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New post 17 Feb 2008, 01:35
its D...

can explanations like hanumayamma's wait at least a day after the question was posed.. please..

thanks a lot...
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Re: Crowding on Mooreville’s subway frequently leads to delays, because it [#permalink]

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New post 17 Feb 2008, 10:17
I think its D.

I think explanations are expected. You can avoid to read the explanations and the answers.

I haven't read the answers people have replied with, otherwise it would impart on my decision making.
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Re: Crowding on Mooreville’s subway frequently leads to delays, because it [#permalink]

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New post 17 Feb 2008, 21:46
jalmohd wrote:
its D...

can explanations like hanumayamma's wait at least a day after the question was posed.. please..

thanks a lot...

if you have a choice of not to read the explanations, how does it affect you?
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Re: Crowding on Mooreville’s subway frequently leads to delays, because it [#permalink]

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New post 18 Feb 2008, 10:41
maverick101 wrote:
I think its D.

I think explanations are expected. You can avoid to read the explanations and the answers.

I haven't read the answers people have replied with, otherwise it would impart on my decision making.


I agree. When you opent the thread and read the question you cannot read other peoples answers until you scroll down. Why would you scroll down and read the answers until you have your own answer. If you were studying out the OG you wouldnt flip to answers before you answered the question first would you. :?:
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Re: Crowding on Mooreville’s subway frequently leads to delays, because it [#permalink]

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New post 25 Mar 2010, 07:50
hanumayamma wrote:
Conclusion: Officials predict that this increase is sufficient to ensure that the incidence of delays due to crowding does not increase.

A. By changing maintenance schedules, the Transit Authority can achieve the 5 percent increase in train trips without purchasing any new subway cars.[Purchasing is not mentioned as part of the argument – eliminate it]

B. The Transit Authority also plans a 5 percent increase in the number of bus trips on routes that connect to subways. [Bus trips is not mentioned as part of the argument – eliminate it]

C. For most commuters who use the subway system, there is no practical alternative public transportation available. [Alternative transportation system is out of scope of the sargument – eliminate it]

D. Most of the projected increase in ridership is expected to occur in off-peak hours when trains are now sparsely used. [Hold it]

E. The 5 percent increase in the number of train trips can be achieved without an equal increase in Transit Authority operational costs. [Why to discuss about operational cost – eliminate it]

Answer: D



i think this is a very smart method of solving the argument....to eliminate the irrelevant ones and keep the potential ones...you could soon find the right answer most of the time
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Re: Crowding on Mooreville’s subway frequently leads to delays, because it [#permalink]

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New post 02 Jun 2013, 12:27
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I chose D.But this is by POE
A. Purchase or not is out of context. We are thinking of the effects of increse in trips.
B. Why are we talking about Bus trips to subways :)
C. Lacking an alternative does not answer the no change in crowding.
D. Seems somewhat supporting official's prediction.
E. We are not talking of costs. Right?

So D.
But I would wonder if they did it practically since it does not make sense to increase trips when the load is not peak and when many use them sparsely :)
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Re: Crowding on Mooreville’s subway frequently leads to delays, because it [#permalink]

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I see that most have arrived at D through the process of elimination. Let me try to explain why D is the right answer:

The issue here is crowding - the greater the number of passengers, the tougher it is for them to get off the train. Thus, delays are caused.

Prediction: there will be a 20% increase in ridership over the next 10 years.
Authorities have, however, planned to increase the number of daily trips only by 5%. But they believe that this would be sufficient to ensure that the delay does not increase. Our objective is to select the option that helps explain why the officials think this.

Option D says that most of the expected increase in ridership will happen in off-peak hours - i.e. during the time of the day when the subway is NOT already crowded to begin with. Therefore, even if the ridership during these hours increases, it is likely that the crowding (and therefore the delays) will still be manageable.

Hope that makes sense. :)
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Re: Crowding on Mooreville’s subway frequently leads to delays, because it [#permalink]

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Re: Crowding on Mooreville’s subway frequently leads to delays, because it   [#permalink] 13 Mar 2018, 07:27
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