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Register now and save up to $200 Available with Beat the GMAT members only code ## Moorevilleâ€™s subway This topic has 2 expert replies and 6 member replies umeshpatil Senior | Next Rank: 100 Posts Joined 23 May 2012 Posted: 79 messages Upvotes: 10 Target GMAT Score: 800 #### Moorevilleâ€™s subway Tue Jun 05, 2012 8:47 pm Crowding on Moorevilleâ€™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 Mooreville 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 officialsâ€™ 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 no 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. ---------------- Premise: Crowding on Moorevilleâ€™s subway(MS) => difficult to exit from the trains=> delay in travel Ridership will increase by 20% in 10 years. Conclusion: Increase of trains by 5 % in 10 years is sufficient to avoid crowding. Need to find something that strengthens: A. Not sure if it will reduce the crowding and also it weakens the conclusion. B. It is just repeats the conclusion and cannot strengthen. C. As there is no other alternative for travel, only train route need to make efficient. So, it strengthens the conclusion. Answer. D. I am not sure if this supports the officialâ€™s prediction to increase the trains by 5%. E. This somewhat supports, but costs are not considered anywhere. My Answer is C. but OG has other answer. Can anyone elaborate why OA is D? gocoder Master | Next Rank: 500 Posts Joined 05 Dec 2015 Posted: 120 messages Target GMAT Score: 720 Sat Sep 16, 2017 8:24 am choice B says: " the Transit Authority also plans a 5 percent increase in the number of bus trips on routes that connect to subways. " Does this statement mean different bus trips cover along the same routes as subways do in the sense that bus stops covering the same stops like subway stops. if this right, shouldn't the 5% of trips along the subways should shift partial burden from the trains ? ### GMAT/MBA Expert DavidG@VeritasPrep Legendary Member Joined 14 Jan 2015 Posted: 2627 messages Followed by: 117 members Upvotes: 1153 GMAT Score: 770 Tue Sep 19, 2017 12:05 pm gocoder wrote: choice B says: " the Transit Authority also plans a 5 percent increase in the number of bus trips on routes that connect to subways. " Does this statement mean different bus trips cover along the same routes as subways do in the sense that bus stops covering the same stops like subway stops. if this right, shouldn't the 5% of trips along the subways should shift partial burden from the trains ? We have to take the language of the answer choice at face value. All we know is that the bus routes connect to the train routes - we don't know that they travel along similar paths. Moreover, we don't know that train commuters would use these additional bus trips as substitutes for train trips. (Isn't is possible that more bus routes connecting to train routes would lead to even more people on the train?) And even if that 5% increase in bus trips does help alleviate some of the additional burden, it still wouldn't explain why there'd be no more delays due to overcrowding, as the conclusion states. _________________ Veritas Prep | GMAT Instructor Veritas Prep Reviews Save$100 off any live Veritas Prep GMAT Course

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Ashujain Master | Next Rank: 500 Posts
Joined
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Wed Jun 06, 2012 1:56 am
umeshpatil wrote:
Crowding on Moorevilleâ€™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 Mooreville 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 officialsâ€™ 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 no 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.
----------------
Premise: Crowding on Moorevilleâ€™s subway(MS) => difficult to exit from the trains=> delay in travel
Ridership will increase by 20% in 10 years.
Conclusion: Increase of trains by 5 % in 10 years is sufficient to avoid crowding.

Need to find something that strengthens:
A. Not sure if it will reduce the crowding and also it weakens the conclusion.
B. It is just repeats the conclusion and cannot strengthen.
C. As there is no other alternative for travel, only train route need to make efficient. So, it strengthens the conclusion. Answer.
D. I am not sure if this supports the officialâ€™s prediction to increase the trains by 5%.
E. This somewhat supports, but costs are not considered anywhere.

My Answer is C. but OG has other answer. Can anyone elaborate why OA is D?
If we paraphrase the question it becomes How will a 5% increase in train trips be enough for 20% increase in ridership?

A) does not answer the question
B) out of scope
C) does not answer the question
D) It says that Most of the projected increase in ridership is expected to occur in off-peak hours. 'Off-peak hours' means 'Not in the period of most frequent or heaviest use' and hence the increase will happen during a time when the ridership is not very high and hence, a 5% increase in train trips will be enough for 20% increase in ridership
E) out of scope

### GMAT/MBA Expert

Kasia@EconomistGMAT GMAT Instructor
Joined
21 May 2012
Posted:
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Wed Jun 06, 2012 3:06 am
Umeshaptil, could you explain to me in detail why you think that C is correct? Then I'll be able to give you some pointers.

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umeshpatil Senior | Next Rank: 100 Posts
Joined
23 May 2012
Posted:
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Target GMAT Score:
800
Wed Jun 06, 2012 9:22 am

Needgmat Master | Next Rank: 500 Posts
Joined
31 May 2016
Posted:
234 messages
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Wed Nov 02, 2016 8:53 am
Hi Verbal Experts ,

Can you please explain why D is correct answer. I still don't understand.

Kavin

gocoder Master | Next Rank: 500 Posts
Joined
05 Dec 2015
Posted:
120 messages
Target GMAT Score:
720
Sat Sep 16, 2017 8:12 am
choice B says:
" the Transit Authority also plans a 5 percent increase in the number of bus trips on routes that connect to subways. "

Does this statement mean different bus trips cover along the same routes as subways do in the sense that bus stops covering the same stops like subway stops.

if this right, shouldn't the 5% of trips along the subways should shift partial burden from the trains ?

gocoder Master | Next Rank: 500 Posts
Joined
05 Dec 2015
Posted:
120 messages
Target GMAT Score:
720
Thu Sep 21, 2017 1:08 am
DavidG@VeritasPrep wrote:
We have to take the language of the answer choice at face value. All we know is that the bus routes connect to the train routes - we don't know that they travel along similar paths. Moreover, we don't know that train commuters would use these additional bus trips as substitutes for train trips. (Isn't is possible that more bus routes connecting to train routes would lead to even more people on the train?) And even if that 5% increase in bus trips does help alleviate some of the additional burden, it still wouldn't explain why there'd be no more delays due to overcrowding, as the conclusion states.
Thanks for your reply. overlooked the alternative issues that could occur if the buses were in parallel paths.

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