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# The number of mountain gorillas is declining with such

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Senior Manager
Joined: 31 Oct 2011
Posts: 338

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The number of mountain gorillas is declining with such [#permalink]

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29 Mar 2012, 02:13
00:00

Difficulty:

5% (low)

Question Stats:

85% (00:28) correct 15% (00:50) wrong based on 61 sessions

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The number of mountain gorillas is declining with such rapidity that the population is one-half in the twenty years between a count made by George Schaller in 1960 and the one made by Dian Fossey in 1980.

(A) with such rapidity that the population is one-half
(B) with such rapidity that the population was one-half
(C) so rapidly the population divided in half
(D) so rapidly that the population was halved
(E) in such rapidity that the population is halved

Are "with such rapidity" and " in such rapidity" possible idioms? or they don't make sense at all?
[Reveal] Spoiler: OA

Kudos [?]: 1252 [0], given: 18

Manager
Joined: 10 Nov 2010
Posts: 246

Kudos [?]: 412 [0], given: 22

Location: India
Concentration: Strategy, Operations
GMAT 1: 520 Q42 V19
GMAT 2: 540 Q44 V21
WE: Information Technology (Computer Software)
Re: PT #15 SC 23 [#permalink]

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29 Mar 2012, 03:11
eybrj2 wrote:
The number of mountain gorillas is declining with such rapidity that the population is one-half in the twenty years between a count made by George Schaller in 1960 and the one made by Dian Fossey in 1980.

(A) with such rapidity that the population is one-half
(B) with such rapidity that the population was one-half
(C) so rapidly the population divided in half
(D) so rapidly that the population was halved
(E) in such rapidity that the population is halved

Are "with such rapidity" and " in such rapidity" possible idioms? or they don't make sense at all?

i think they dont make sense.
In this context of sentence we need adverb "so" to modify "is declining". here we have two adverbs in a row so rapidly
So we are left with C & D
C changes the meaning

so D
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Kudos [?]: 412 [0], given: 22

Senior Manager
Joined: 13 Mar 2012
Posts: 351

Kudos [?]: 204 [0], given: 31

Concentration: Operations, Strategy
Re: PT #15 SC 23 [#permalink]

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30 Mar 2012, 03:32
The number of mountain gorillas is declining with such rapidity that the population is one-half in the twenty years between a count made by George Schaller in 1960 and the one made by Dian Fossey in 1980.

(A) with such rapidity that the population is one-half
(B) with such rapidity that the population was one-half
--> "with " changes the meaning to absurdity by saying the act of declining includes "such rapidity"

(C) so rapidly the population divided in half
--> we need 'that' here to introduce the subordinate clause

(D) so rapidly that the population was halved
--> correct

(E) in such rapidity that the population is halved
--> need past tense here because the act of getting half occurred in past.

hence D

HTH
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Manager
Joined: 21 Sep 2011
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Concentration: Entrepreneurship, General Management
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Re: PT #15 SC 23 [#permalink]

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30 Mar 2012, 06:25
IMO D. Agree with above user's explanation.
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Re: PT #15 SC 23   [#permalink] 30 Mar 2012, 06:25
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