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According to surveys by the National Institute on Drug

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*700* According to surveys by the National Institute [#permalink]

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New post 11 Apr 2015, 22:37
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According to surveys by the National Institute on Drug Abuse, about 20 percent of young adults used cocaine in 1979, doubling those reported in the 1977 survey.

A. doubling those reported in the 1977 survey

B. to double the number the 1977 survey reported

C. twice those the 1977 survey reported

D. twice as much as those reported in the 1977 survey

E. twice the number reported in the 1977 survey
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Re: *700* According to surveys by the National Institute [#permalink]

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New post 12 Apr 2015, 05:47
According to surveys by the National Institute on Drug Abuse, about 20 percent of young adults used cocaine in 1979, doubling those reported in the 1977 survey.

A. doubling those reported in the 1977 survey (antecedent of 'those' - ambiguous)

B. to double the number the 1977 survey reported (to double shows purpose: incorrect)

C. twice those the 1977 survey reported (antecedent of 'those' - ambiguous)

D. twice as much as those reported in the 1977 survey (antecedent of 'those' - ambiguous)

E. twice the number reported in the 1977 survey (correct)

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Re: *700* According to surveys by the National Institute [#permalink]

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New post 13 Apr 2015, 04:11
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According to surveys by the National Institute on Drug Abuse, about 20 percent of young adults used cocaine in 1979, doubling those reported in the 1977 survey.

First of all, there is no cause and effect and the next sentence fragment is just to add comparison between the numbers in 1979 and 1977.

A. doubling those reported in the 1977 survey -> Doubling is a verbing modifier and suggest that sentence is an effect of the previous clause which is not the case.

B. to double the number the 1977 survey reported -> to double shows intent. The sentence just shows a comparison and doesn't say that anything is done to double anything

C. twice those the 1977 survey reported -> those refer to adults whereas we are comparing number of adults in 1979 and 1977.

D. twice as much as those reported in the 1977 survey -> similar issue as option C)

E. twice the number reported in the 1977 survey -> twice the number is the correct comparison.

Twice is an adjective or an adverb which can modify a noun or an adjective wheras double can act as as a verb or or an adjective.
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Re: *700* According to surveys by the National Institute [#permalink]

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New post 13 Apr 2015, 14:09
A. doubling those reported in the 1977 survey
awkward structure, comma+ing serves as a noun modifier. But since the comma+ing modifier must associate with SV of the clause that it modifies, in our case it does not make any sense.

B. to double the number the 1977 survey reported
to+verb is used to show purpose. This choice alters the meaning of the sentence. Now it implies that 20% of young adults used cocain so that to double the number… illogical.

C. twice those the 1977 survey reported
2 independent clauses connected only by a comma

D. twice as much as those reported in the 1977 survey
“as much as” used with people. Much is used with uncountable nouns only.

E. twice the number reported in the 1977 survey
Correct answer choice. Now the underlined portion serves as noun (twice the number) + noun modifier (reported)

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Re: According to surveys by the National Institute on Drug [#permalink]

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New post 15 May 2015, 06:04
Clearly E is the answer..

However, I have a doubt here...
If I replace twice by double, then would it be correct?

i.e. if the choice were
(E) double the number reported in the 1977 survey

then would it be correct?

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Re: According to surveys by the National Institute on Drug [#permalink]

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New post 19 Jun 2015, 10:26
I go with Answer E. clear and concise

pi10t wrote:
OlgaN wrote:
Consider the following:
51. According to surveys by the National Institute on Drug Abuse, about 20 percent of young adults used cocaine in 1979, doubling those reported in the 1977 survey.(
(A) doubling those reported in the 1977 survey
(B) to double the number the 1977 survey reported
(C) twice those the 1977 survey reported
(D) twice as much as those reported in the 1977 survey
(E) twice the number reported in the 1977 survey

http://www.gmatclub.com/forum/1/51309?highlight=double - similar question where double the figure is the best answer.
What is the difference between the use of number and figure?
As i know, better answer is as many as in...but there is no such answer.
Why there is twice the number, not twice the figure?


down to D and E.
D is out : 'those' ?

POE : I would bet on E.

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Re: According to surveys by the National Institute on Drug [#permalink]

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New post 09 Mar 2016, 21:05
shikhar wrote:
51. According to surveys by the National Institute on Drug Abuse, about 20 percent of young adults used cocaine in 1979, doubling those reported in the 1977 survey.
(A) doubling those reported in the 1977 survey
(B) to double the number the 1977 survey reported
(C) twice those the 1977 survey reported
(D) twice as much as those reported in the 1977 survey
(E) twice the number reported in the 1977 survey


is there a solid reason behind discarding D.??
Is it because they have used as much for countable quantity.
so it shud be either twice as many or twice the number ...

Please confirm:

Yes Shikhar.. As much as a wrong usage here. Much is used for uncountable Noun and Many is used for countable noun. Here adults can be counted so usage of MUCH is TOTALLY wrong.
Hope this is clear

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Re: According to surveys by the National Institute on Drug [#permalink]

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New post 19 Mar 2017, 00:52
According to surveys by the National Institute on Drug Abuse, about 20 percent of young adults used cocaine in 1979, doubling those reported in the 1977 survey.(

(A) doubling those reported in the 1977 survey - DOUBLING has distorted the actual meaning of the sentence.

(B) to double the number the 1977 survey reported - the 20 % have intentionally doubled the number, which is not the actual meaning

(C) twice those the 1977 survey reported - Wrong comparison - Number compared to people.

(D) twice as much as those reported in the 1977 survey - Wrong Comparison - Same as C

(E) twice the number reported in the 1977 survey - Number Compared to Number. - CORRECT.

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Re: According to surveys by the National Institute on Drug [#permalink]

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New post 29 Apr 2017, 17:37
Merged topics. Please, search before posting questions!
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Re: *700* According to surveys by the National Institute [#permalink]

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New post 07 Nov 2017, 06:05
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: According to surveys by the National Institute on Drug [#permalink]

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New post 17 Nov 2017, 05:28
According to surveys by the National Institute on Drug Abuse, about 20 percent of young adults used cocaine in 1979, doubling those reported in the 1977 survey.

(A) doubling those reported in the 1977 survey
(B) to double the number the 1977 survey reported
(C) twice those the 1977 survey reported
(D) twice as much as those reported in the 1977 survey
(E) twice the number reported in the 1977 survey


Please share the explanation for this.
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Re: According to surveys by the National Institute on Drug [#permalink]

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New post 17 Nov 2017, 08:22
jwalantudesai wrote:
According to surveys by the National Institute on Drug Abuse, about 20 percent of young adults used cocaine in 1979, doubling those reported in the 1977 survey.

(A) doubling those reported in the 1977 survey
(B) to double the number the 1977 survey reported
(C) twice those the 1977 survey reported
(D) twice as much as those reported in the 1977 survey
(E) twice the number reported in the 1977 survey


Please share the explanation for this.
Source 1000 SC series


OA is E.
https://gmatclub.com/forum/according-to-surveys-by-the-national-institute-on-drug-19660.html

jwalantudesai please use search engine before posting.
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Re: According to surveys by the National Institute on Drug   [#permalink] 17 Nov 2017, 08:22

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