CR - Mayville Airport

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SubratGmat2011: Junior | Next Rank: 30 Posts; Posts: 24; Joined: Mon Jul 05, 2010 11:35 pm; Thanked: 1 times

by SubratGmat2011 » Sat Sep 25, 2010 2:22 am

Source: Beat The GMAT — Critical Reasoning | Sat Sep 25, 2010 2:22 am

paddle_sweep: Master | Next Rank: 500 Posts; Posts: 379; Joined: Wed Apr 07, 2010 12:53 am; Location: Chennai,India; Thanked: 3 times

by paddle_sweep » Sat Sep 25, 2010 4:10 am

I will go with 'A'. What is the source of this question please?

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arpita@gurome: GMAT Instructor; Posts: 91; Joined: Fri Apr 02, 2010 11:05 pmFollowed by: 42 members; Location: Mumbai, India; Thanked: 33 times

by arpita@gurome » Sat Sep 25, 2010 6:37 am

SubratGmat2011 wrote:Mayville Airport and Newcomb Airport have the same number of flight departures each day. Mayville Airport
experiences 26 departure delays per 100 flights, while Newcomb Airport experiences 20 departure delays per 100
flights. When delays caused by bad weather are disregarded, Mayville Airport has 5 fewer departure delays per
100 flights than Newcomb Airport does. Which of the following conclusions is best supported by the information
given above?
"¢ Bad weather causes a greater number of departure delays at Mayville Airport than at Newcomb Airport.
"¢ On average, the weather at Mayville Airport is worse than it is at Newcomb Airport.
"¢ Mechanical problems cause a greater number of delays at Newcomb Airport than at Mayville Airport.
"¢ The fleet of airplanes leaving from Newcomb Airport is better equipped to handle inclement weather than the fleet
of airplanes leaving from Mayville Airport.
"¢ Mayville Airport experiences a greater number of arrival delays per 100 flights than Newcomb Airport does.

In the conclusion questions the answer must follow from the stimulus given and it should be supported by facts given in the stimulus.

Let us prephrase directionally, say Newcomb's non-weather related delays stack up to 17 (3 are weather related) than Mayville has to be 12 (thus weather related = 25 - 12 = 13), no matter what value is taken fro Newcomb, weather related delays for Mayville will be greater than for Newcomb.

Looking at the choices:
A - Smack on! Keep
B - Looks good, weather is bad that is why flights at Mayville delayed more than Newcomb due to weather. Keep
C - Fails the facts, we do not know about mechanical issues. Discard.
D - Could be could not be, facts not given.
E - Fails the facts, do not know about arrivals .......discard

Contenders:
A and B.

A looks really good.
B - what if on average the weather in Mayville is good throughout the day (better than Newcomb) but for the slot 5 Am to 9 Am when 40% of the flights leave the weather gets really bad and leads to a lot of delays. In a hypothetical situaiton like this, the "average" weather at Mayville could be better than Newcomb yet lead to more delays........Hence B is not a water tight conclusion, whereas A is......

[spoiler]Hence pick A[/spoiler]

Hope this helps!

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SubratGmat2011: Junior | Next Rank: 30 Posts; Posts: 24; Joined: Mon Jul 05, 2010 11:35 pm; Thanked: 1 times

by SubratGmat2011 » Sat Sep 25, 2010 5:42 pm

Thanks Arpita, It helped.

singalong: Senior | Next Rank: 100 Posts; Posts: 95; Joined: Wed Feb 09, 2011 6:42 amFollowed by: 1 member; Thanked: 1 times

by singalong » Sat Jan 07, 2012 12:52 am

If 5 delays are deducted from MayVille airport, the number of delays is still 21 against 20 delays at NewComb airport.Hence C.

Is this reasoning right?

happymanocha: Senior | Next Rank: 100 Posts; Posts: 73; Joined: Sat Nov 27, 2010 1:40 pm; Thanked: 1 times

by happymanocha » Sat Jan 07, 2012 8:22 am

I paraphrased the conclusion before reading the answer choices. Number of flights delayed due to bad weather at M is 1 more than at N.

A - contender.
B - loser. There could be lot of differences between these airports and air fleets which can cause the delay even the weather is different.
C - Pick the numbers here. M : 13 -13 and N: 12 - 8. 8 < 13 so it is not true.
D - There is no information given on fleets.
E - Out of the scope.

ArunangsuSahu: Master | Next Rank: 500 Posts; Posts: 382; Joined: Thu Mar 31, 2011 5:47 pm; Thanked: 15 times

by ArunangsuSahu » Sat Jan 07, 2012 11:31 am

3rd Line of the CR stem gives the answer as (A).
Definitely weather is the main reason for greater number of delays at theMayville Airport

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by [email protected] » Wed Nov 02, 2016 11:31 am

Mayville Airport and Newcomb Airport have the same number of flight departures each day. Mayville Airport
experiences 26 departure delays per 100 flights, while Newcomb Airport experiences 20 departure delays per 100
flights. When delays caused by bad weather are disregarded, Mayville Airport has 5 fewer departure delays per
100 flights than Newcomb Airport does. Which of the following conclusions is best supported by the information
given above?
"¢ Bad weather causes a greater number of departure delays at Mayville Airport than at Newcomb Airport. - If MA despite having greater number of delays reaches to a point where it has 5 fewer delays than Newcomb airport. Then it means that whatever number of delays NA has, MA is 26 - (6+x) = NA + 5. Therefore the number of delays due to weather is greater in MA

"¢ On average, the weather at Mayville Airport is worse than it is at Newcomb Airport. - We can't say that. Maybe the MA isn't better equipped to handle the weather delays so despite the lower number as compared to NA it might bear after effects for several days

"¢ Mechanical problems cause a greater number of delays at Newcomb Airport than at Mayville Airport. - The passage has only talked about weather delays. Rest fall in other delays. How mechanical causes problems at both can't be commented upon.

"¢ The fleet of airplanes leaving from Newcomb Airport is better equipped to handle inclement weather than the fleet of airplanes leaving from Mayville Airport. - Again. Can't be proved per the fact test

"¢ Mayville Airport experiences a greater number of arrival delays per 100 flights than Newcomb Airport does.- OFS. We are only concerned with Delay flights.

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