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Register now and save up to $200 Available with Beat the GMAT members only code ## Mooreville’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 Thanked: 10 times Target GMAT Score: 800 #### Mooreville’s subway Tue Jun 05, 2012 8:47 pm Elapsed Time: 00:00 • Lap #[LAPCOUNT] ([LAPTIME]) 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 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 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 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 Mooreville’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 official’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? Need free GMAT or MBA advice from an expert? Register for Beat The GMAT now and post your question in these forums! Ashujain Master | Next Rank: 500 Posts Joined 20 Apr 2012 Posted: 123 messages Followed by: 1 members Thanked: 29 times Wed Jun 06, 2012 1:56 am umeshpatil wrote: 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 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 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 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 Mooreville’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 official’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 Thanked by: umeshpatil ### GMAT/MBA Expert Kasia@EconomistGMAT GMAT Instructor Joined 21 May 2012 Posted: 646 messages Followed by: 142 members Thanked: 322 times 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. _________________ Kasia Senior Instructor Master GMAT - the #1 rated GMAT course • If you found my post helpful, please click the "thank" button and/or follow me. • Take a 7 day free trial and find out why Economist GMAT is the highest rated GMAT course - http://gmat.economist.com/ • Read GMAT Economist reviews - http://reviews.beatthegmat.com/economist-gmat/economist-gmat-course Free 7-Day Test Prep with Economist GMAT Tutor - Receive free access to the top-rated GMAT prep course including a 1-on-1 strategy session, 2 full-length tests, and 5 ask-a-tutor messages. Get started now. umeshpatil Senior | Next Rank: 100 Posts Joined 23 May 2012 Posted: 79 messages Thanked: 10 times Target GMAT Score: 800 Wed Jun 06, 2012 9:22 am Thanks Ashujain, Your explanation justifies the OG answer. Needgmat Master | Next Rank: 500 Posts Joined 31 May 2016 Posted: 234 messages Thanked: 3 times Wed Nov 02, 2016 8:53 am Hi Verbal Experts , Can you please explain why D is correct answer. I still don't understand. Many thanks in advance. Kavin ### Top Member 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 ? ### Top Member 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: 2292 messages Followed by: 115 members Thanked: 1061 times 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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### Top Member

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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