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Of the people who moved from one city to another when they

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Of the people who moved from one city to another when they [#permalink]

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02 Nov 2012, 23:17
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51% (02:14) correct 49% (01:36) wrong based on 255 sessions

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Of the people who moved from one city to another when they got a job, the percentage who moved to San Diego has decreased by three percentage points over the past ten years. Since many local businesses in San Diego cater to working professionals, this decline is likely to have a noticeably negative economic effect on these businesses.

Which of the following, if true, most seriously weakens the argument?

(A)

The total number of people who got a job and moved to another city for work has increased significantly over the past ten years.

(B)

There are far more local businesses in San Diego that cater to tourists than there are local businesses that cater to working professionals.

(C)

The number of people who move out of San Diego to accept employment in other states has increased over the past ten years.

(D)

San Diego attracts more people who move from one city to another when they get a job than does any other city.

(E)

The number of people who left San Diego when they got a job and moved to another city was greater last year than it was ten years ago.

-------------------------
On this Critical Reasoning question, I reached the answer, but I wanted to find out your thoughts on rejecting the other answer choices.

Thank you.
[Reveal] Spoiler: OA
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Re: Of the people who moved from one city to another when they [#permalink]

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03 Nov 2012, 12:08
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Working on questions with numbers (although not explicitly stated here) and percentages, you need to keep in mind that higher percentages do not mean lower numbers:

So, the blame is that a declining % of people move to San Diego -> problem to prof. businesses.

A-CORRECT. Since % are still based on numbers, and these numbers (over the years) are not stated, we can't tell if the number of people who moved to SD is parallel to the % (ei. declining), as well. However, in this situation we're given that total number of people went up. In regards to SD, this means that the number of people either went down, staid the same or went up. So, although it is not 100% against the argument, 66.66% of it is weakening the conclusion. This makes A a possible answer.
B, C, E are irrelevant.
D - Opposite answer to what we're looking for.
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Re: Of the people who moved from one city to another when they [#permalink]

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03 Nov 2012, 12:38
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Re: Of the people who moved from one city to another when they [#permalink]

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11 Jan 2015, 18:54
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Re: Of the people who moved from one city to another when they [#permalink]

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24 Apr 2017, 00:33
Hello from the GMAT Club VerbalBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

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Re: Of the people who moved from one city to another when they [#permalink]

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24 Apr 2017, 01:27
Of the people who moved from one city to another when they got a job, the percentage who moved to San Diego has decreased by three percentage points over the past ten years. Since many local businesses in San Diego cater to working professionals, this decline is likely to have a noticeably negative economic effect on these businesses.

Lets understand the gist of the argument

10 years ago
100 people moved in total
10% moved to San Diego =10 people

Now
100 people moved
3 % decrease
so now 7% moved to San Diego=7 in total

So there is actual a decrease

Consider a case
The total number of people who got a job and moved to another city for work has increased significantly over the past ten years
Say
10000 people moved now
so 7%
would be 700
hence more people actually moved to San Diego

Hence A is the perfect weakener
Re: Of the people who moved from one city to another when they   [#permalink] 24 Apr 2017, 01:27
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