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# A significant number of complex repair jobs carried out by Ace Repairs

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Manager
Joined: 05 Sep 2014
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Re: A significant number of complex repair jobs carried out by Ace Repairs  [#permalink]

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13 Oct 2016, 05:29
Hey abhimahna ,

Thanks for replying. That's very helpful. I think I kind of ignored the words "when initial repairs are inadequate that shows author is talking about the cases when repair are not done satisfactorily and not making assumption all of the repair are done inadequately.

Thanks for clearing it further.

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Megha
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Re: A significant number of complex repair jobs carried out by Ace Repairs  [#permalink]

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30 Apr 2017, 03:36
1
Premise :- Mehanics do not lack competence.
Conclusion :- Reworked jobs are done with focused concentration and reliably than first time jobs.

Try negating A again. It actually does weaken the conclusion. Negating A says that there is some systematic difference in memberships between the group of mechanics who do 1st time jobs and those that do rework jobs. The author says that the rework jobs are always done correctly. His conclusion is that this is not due to a lack of competence by the mechanics, but rather by gained concentration in the 2nd jobs. So he makes an assumption that the same set of mechanics are working on the first job as are working on the rework. If there is a second group of mechanics that takes care of the reworks, than the faulty first repairs could have been the result of incompetent mechanics.

E talks about only repair jobs and the argument is about complex repair jobs..
So saying that there is NO category of repair jobs in which Ace Repairs.... is not warranted by the argument ...

Hence A.
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Re: A significant number of complex repair jobs carried out by Ace Repairs  [#permalink]

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08 Aug 2017, 10:14
Systematic difference in membership" holistically encompasses all factors. "Systematic difference in competence" would be too specific.The very phrase "No systematic difference in membership" indicates that the two sets of people that is, the group involved in the first time work and the group doing the rework happens to be the same. But if we change the wording to "systematic difference in membership" then it might imply to two different groups which would go against the conclusion. Remember assumptions are made by the author himself and these would invariably support the conclusion,not go against the conclusion.

Hi

How do you exactly go about thinking of assumptions when two or more things are included in the conclusion. In this I was thinking more about new jobs vs rework jobs and not so much about the mechanics. How do you know where to focus on.
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Re: A significant number of complex repair jobs carried out by Ace Repairs  [#permalink]

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20 Aug 2017, 10:36
At first glance, neither of the options make sense. Since option B,C,D and E are totally irrelevant, that's why I chose A. But, even option "A" is awfully written. What does the part in red refer to? What sort of membership is the option talking about? It could have been written in a better way.

A significant number of complex repair jobs carried out by Ace Repairs have to be reworked under the company’s warranty. The reworked jobs are invariably satisfactory. When initial repairs are inadequate, therefore, it is not because the mechanics lack competence; rather, there is clearly a level of focused concentration that complex repairs require that is elicited more reliably by rework jobs than by first-time jobs.

The argument above assumes which of the following?

[A] There is no systematic difference in membership between the group of mechanics who do first-time jobs and the group of those who do rework jobs.

[B] There is no company that successfully competes with Ace Repairs for complex repair jobs. -Out of scope

[C] Ace Repairs’ warranty is good on first-time jobs but does not cover rework jobs. -Out of scope

[D] Ace Repairs does not in any way penalize mechanics who have worked on complex repair jobs that later had to be reworked. -Out of scope

[E] There is no category of repair jobs in which Ace Repairs invariably carries out first-time jobs satisfactorily. - This is a very extreme sentence.
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Re: A significant number of complex repair jobs carried out by Ace Repairs &nbs [#permalink] 20 Aug 2017, 10:36

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