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# Providing initial evidence that airports are a larger source

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Providing initial evidence that airports are a larger source [#permalink]

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01 Feb 2010, 22:52
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Providing initial evidence that airports are a larger source of pollution than they were once believed to be, environmentalists in Chicago report that the total amount of pollutant emitted annually by vehicles at O'Hare International Airport is twice as much as that which is being emitted annually by all motor vehicles in the Chicago metropolitan area.

A) as much as that which is being emitted annually by all
B) as much annually as is emitted by the
C) as much compared to what is annually emitted by all
D) that emitted annually by all
E) that emitted annually compared to the

[Reveal] Spoiler: OA
D

Can someone explain why you would say "twice that" instead of answer C? Is it just become it's more concise? Can we say twice as much? Or is that considered wordy?

Last edited by walker on 02 Feb 2010, 09:47, edited 1 time in total.
Walker: Please, use "spoiler" to hide the OA. Thanks.
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Re: GMAT Prep Comparisons [#permalink]

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02 Feb 2010, 04:30
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I would like to know the explanation too, but also would like to give it a try.
Here I'll try to identify & omit wrong choices, let's start from 'A'. 'A' is a wrong choice as it can't be same because of "as much as that which is being" it's Wordy (Brevity issue).
now it can't be 'B' as "as much annually as is" is awkward.

In 'C' it says "as much compared to" which is wordy it could have been "as compared to" no need for much, so it can't be C. Also by inserting "compared to" we r changing the meaning of sentence.
It can' be 'E' as again "compared to the" is changing the original meaning of the sentence. And also "compared to" is used for the comparison between two unlike things to stress the resemblance and 'amount of pollutant' is being used for both of the areas which are "like" things

Now coming to D, first of all it's shorter & succinct one and also "that" is much better that "as much as" because "as much as" is used when 2 things are of equal amount or weight or volume etc. whereas "twice that" means twice of the pollutant emitted annually by vehicles at O'Hare International Airport.
So the Answer is "D" (succinct one) .

Please! correct me if I am wrong. Any addition or advice would be highly appreciable. I just tried to explain as much as I could, btw I am learning grammar too.
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Re: GMAT Prep Comparisons [#permalink]

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02 Feb 2010, 04:33
For "B" I wrote following
"as much annually as is" is awkward
actually it's awkward because "as much +adverb as" looks awkward. Isn't it?
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Re: GMAT Prep Comparisons [#permalink]

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02 Feb 2010, 13:22
thanks atifs, i like your explanation. I never thought of compared to and twice that have different meanings.
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Re: GMAT Prep Comparisons [#permalink]

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02 Feb 2010, 18:13
Is there something wrong with twice as much opposed to twice "that"?
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Re: GMAT Prep Comparisons [#permalink]

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02 Feb 2010, 23:51
Here is a link-> a guy from Gmatpill explaining the use of "That" instead of "which"
http://www.youtube.com/watch?v=foWx9ffAAb4

There u'll see he explains the usage of "which" and "that" in the sentence when inserting option B out of 5 given choices.
According to him
For
'Stores' --> "which"
but for
'one-third of stores' --> "that"
Similarly for 'twice'--> "that"

Hope it helps

But I would like if some expert could explain it as I am not expert ( just trying my best to learn it myself )
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Re: GMAT Prep Comparisons [#permalink]

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12 Jun 2011, 07:59
"as much as" is the correct idiom but A is wordy and incorrectly constructed.
Had narrowed it down to A and D.

D is correct..
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Re: GMAT Prep Comparisons [#permalink]

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12 Jun 2011, 08:25
Dont we require a verb (is) after 'that' in D?
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Re: GMAT Prep Comparisons [#permalink]

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12 Jun 2011, 08:53
+1 D

The idiom is "as (adj./adv.) as".
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Re: Providing initial evidence that airports are a larger source [#permalink]

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22 Oct 2013, 11:03
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Re: Providing initial evidence that airports are a larger source   [#permalink] 22 Oct 2013, 11:03
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# Providing initial evidence that airports are a larger source

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