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If retail stores experience a decrease in revenues during

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Re: Must be True questions [#permalink] New post 08 Oct 2010, 00:20
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Re: Must be True questions [#permalink] New post 12 Jan 2011, 06:36
then either attitudes toward extravagant gift-giving have changed or prices have risen beyond the level most people can afford.

Eith X or Y happens.If Y does not happen then X happens.
C says Y does not happen . Then X must happen => A must be true too.
Doesnt anyone agree with me on this
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Re: Must be True questions [#permalink] New post 13 Jan 2011, 22:35
gmatprep09 wrote:
If retail stores experience a decrease in revenues during this holiday season, then either attitudes toward extravagant gift-giving have changed or prices have risen beyond the level most people can afford. If attitudes have changed, then we all have something to celebrate this season. If prices have risen beyond the level most people can afford, then it must be that salaries have not kept pace with rising prices during the past year.

Assume the premises above to be true. If salaries have kept pace with rising prices during the past year, which one of the following must be true?
(A) Attitudes toward extravagant gift-giving have changed.
(B) Retail stores will not experience a decrease in retail sales during this holiday season.
(C) Prices in retail stores have not risen beyond the level that most people can afford during this holiday season.
(D) Attitudes toward extravagant gift-giving have not changed, and stores will not experience a decrease in revenues during this holiday season.
(E) Either attitudes toward extravagant gift-giving have changed or prices have risen beyond the level that most people can afford during this holiday season.


ugh tough question, under time constraint, down to C & A, i had to go with choice (C), which seemed to be more generic than choice (A), based on the stem, where everything goes if...if...if, i didn't feel choice A fitted well for "must be true" answer...

wouldn't mind hearing some experts chime in. :)
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Re: Must be True questions [#permalink] New post 14 Jan 2011, 04:47
C for me ..
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Re: Must be True questions [#permalink] New post 20 Apr 2011, 11:24
C.

if salaries have kept pace with rising prices during the past year

=> prices have not risen beyond the level most people can afford.

Using If X then Y... if not X then not Y.

(A) Attitudes toward extravagant gift-giving have changed. This can be considered only when retail stores experience a decrease in revenues during this holiday season. There is no mention that it actually happens. This seems to be shell game answer.
(B) Retail stores will not experience a decrease in retail sales during this holiday season.Again it is assuming the same.
(C) Prices in retail stores have not risen beyond the level that most people can afford during this holiday season.
(D) Attitudes toward extravagant gift-giving have not changed, and stores will not experience a decrease in revenues during this holiday season.Same as A. We don't know whether the sales will reduce.
(E) Either attitudes toward extravagant gift-giving have changed or prices have risen beyond the level that most people can afford during this holiday season.This may happen only when revenues are reduced. The argument does not state any reason for it to happen.

Except option C..all other options are nicely manipulated, but all are wrong for simple reason - we really don't know revenues would reduce.
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Re: If retail stores experience a decrease in revenues during [#permalink] New post 27 Jun 2012, 02:57
Straight C. If salaries have kept pace with prices, then, per the premise, we can confidently infer that prices will not be beyond the reach of the said consumers.

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Re: If retail stores experience a decrease in revenues during [#permalink] New post 19 Feb 2013, 11:36
Expert's post
gmatprep09 wrote:
If retail stores experience a decrease in revenues during this holiday season, then either attitudes toward extravagant gift-giving have changed or prices have risen beyond the level most people can afford. If attitudes have changed, then we all have something to celebrate this season. If prices have risen beyond the level most people can afford, then it must be that salaries have not kept pace with rising prices during the past year.
Assume the premises above to be true. If salaries have kept pace with rising prices during the past year, which one of the following must be true?
(A) Attitudes toward extravagant gift-giving have changed.
(B) Retail stores will not experience a decrease in retail sales during this holiday season.
(C) Prices in retail stores have not risen beyond the level that most people can afford during this holiday season.
(D) Attitudes toward extravagant gift-giving have not changed, and stores will not experience a decrease in revenues during this holiday season.
(E) Either attitudes toward extravagant gift-giving have changed or prices have risen beyond the level that most people can afford during this holiday season.

fameatop wrote:
Can you Kindly explain this question as well.
Fame

In general, the Analytical Reasoning questions from the LSAT are slightly more challenging versions of the GMAT CR questions, and therefore make good practice for GMAT students who want to challenge themselves. This particular question relies a bit too heavily on formal logic --- that's fine for the LSAT, but GMAT students need not wrestle with this much formal logic.

This argument has the following formal design.
First sentence = If M, then N or P
Second sentence = If P, then not Q.

Here,
M = retail stores experience a decrease in revenues during this holiday season
N = attitudes toward extravagant gift-giving have changed
P = prices have risen beyond the level most people can afford
Q = salaries have kept pace with rising prices during the past year

The question stem tells us ---- assume Q. With this, we can use a variant of a classical argument type known as Modus Tollens.

MODUS TOLLENS: Given (If W, then Y) and (not Y), we can conclude (not W).

The argument gives us "If P, then not Q", and the question stem gives us Q, so according to Modus Tollens, we can conclude "not P" --- i.e. "Prices in retail stores have not risen beyond the level that most people can afford during this holiday season." This is precisely what (C) says.

Because we know nothing about the truth or falsehood of M, we can draw no conclusion about N. If we were given both "not P" and M, we could conclude N, but in the absence of information about M, we can conclude nothing about N.

Everything I have said here is well beyond what anyone needs to know for the GMAT. If love this stuff, then forget business school --- take the LSAT and become a lawyer. If you are set on the GMAT and business school, then the last thing you need to know is Modus Tollens.

Please let me know if anyone reading this has any questions.

Mike :-)
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Re: If retail stores experience a decrease in revenues during   [#permalink] 19 Feb 2013, 11:36
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