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According to surveys by the National Institute on Drug Abuse, about 20

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According to surveys by the National Institute on Drug Abuse, about 20  [#permalink]

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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

Originally posted by ywilfred on 06 Sep 2005, 07:16.
Last edited by Bunuel on 20 Dec 2018, 07:35, edited 4 times in total.
Renamed the topic and edited the question.
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Re: According to surveys by the National Institute on Drug Abuse, about 20  [#permalink]

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New post 18 Nov 2010, 02:46
5
3
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 those implies doubling people - Sounds awkward.
(B) to double the number the 1977 survey reported- to double the number implies - they did what they did(used cocaine) in order to double the number - sounds awkward.
(C) twice those the 1977 survey reported - twice people - Sounds awkward, rather have been twice the number of people.
(D) twice as much as those reported in the 1977 survey- twice as much as those implies that they used cocaine twice as much as people (and not the number of people)- Sounds awkward .
(E) twice the number reported in the 1977 survey - Twice the number reported Perfect construction implying that the number of people in 1979 who used cocaine was double the number of people in the 1977 survey..

So the answer is E .
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Re: According to surveys by the National Institute on Drug Abuse, about 20  [#permalink]

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New post 31 Jan 2008, 00:26
5
For ex: The percentage of increase in new CPU’s performance is twice the number to its predecessor’s ones.

(A) doubling those reported in the 1977 survey [Doubling incorrectly modifying the meaning – eliminate it]

(B) to double the number the 1977 survey reported [This is changing the meaning – eliminate it]

(C) twice those the 1977 survey reported [Number is compared people – eliminate it]

(D) twice as much as those reported in the 1977 survey [Number is compared people – eliminate it]

(E) twice the number reported in the 1977 survey [ The number is compared correctly – hold it]

Answer: E
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Re: According to surveys by the National Institute on Drug Abuse, about 20  [#permalink]

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New post 20 May 2008, 00:51
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Answer option E.
Anirudh, both "Doubling" & "to double" when used sound as if 'about 20 percent of young adults' were causal to the increase in numbers. What essentially the author wants to mean is that tha 'number of young adults using cocaine' 'now' compared to '1970 survey' is double.

Option E takes care of this error making it more precise.

You might want to look at this sentence from OG11 for more explanation involving such usage..

The gyrfalcons, an arctic bird of prey, has survived a close brush with extinction; its numbers are now five times greater than when the use of DDT was sharply restricted in the early 1970s.
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Re: According to surveys by the National Institute on Drug Abuse, about 20  [#permalink]

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New post 16 Jul 2010, 13:24
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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 - '20% percent' [number] is compared to 'young people'
(B) to double the number the 1977 survey reported - surveys dont report.
(C) twice those the 1977 survey reported - '20% percent' [number] is compared to 'young people'
(D) twice as much as those reported in the 1977 survey - '20% percent' [number] is compared to 'young people'
(E) twice the number reported in the 1977 survey - '20% percent' [number] is correctly compared to 'number'
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Re: According to surveys by the National Institute on Drug Abuse, about 20  [#permalink]

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New post 17 Nov 2010, 18:19
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Nice catch, scheol - the presence of "those" in D should tip you off that something is wrong.

"Those" is clearly plural, but "much" is a singular modifier ("many" would be the plural), and the two would have to be part of the same comparison. So D is contradictory just at that.

"Those" really should refer to "the number", which is what was reported, so regardless that's wrong. E correctly compares the 1979 number to the new number, and is therefore correct. Nice work!
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Re: According to surveys by the National Institute on Drug Abuse, about 20  [#permalink]

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New post 03 Mar 2012, 13:45
I am not an expert... But this is how I got to the answer...

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 -- What is those pointing to?? Replace "20 percent of young adults" in the later...and not proper
(B) to double the number the 1977 survey reported -- not proper
(C) twice those the 1977 survey reported
(D) twice as much as those reported in the 1977 survey -- What is those
(E) twice the number reported in the 1977 survey -- correct


Still, I am looking forward from the experts on their approach
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Re: According to surveys by the National Institute on Drug Abuse, about 20  [#permalink]

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New post 11 Jul 2013, 00:36
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ankurgupta03 wrote:
(C) twice those the 1977 survey reported
Why is this wrong
(E) twice the number reported in the 1977 survey
here the persons are compared to numbers, why is this correct

Some one please explain

hi ankur,

option E :==>NUMBERS ARE COMPARED TO NUMBERS AND NOT PERSON TO NUMBERS.

lets see: 20 percent of X=RESULT==>If you see..result is always a numerical value....whenever there is mathematics ...it is going to give you value.
for example: if you have 100 gm protein==>if i say 20 percent of protein you will burn while running==>what does this mean=>20 gm protein you will utilise while burning===>thats a numerical value===>so takeaway is that whenever you have PERCENT OF SOMETHING===>then you should always compare to numerical thing..and not to any other thing.

moreover in option C THOSE ==>it ise referring to children so we cant compare number with children.

hope it helps
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Re: According to surveys by the National Institute on Drug Abuse, about 20  [#permalink]

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New post 06 Feb 2014, 23:11
Klenex wrote:
Q. 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



A,C and D are eliminated because we are trying to compare the percentage of young adults reported for cocaine use. We are not comparing the number of young adults or young adults between 1977 and 1979; we are rather comparing the percentage, which is a number. Meaning the sentence is reporting percentage as a number, which is 20 for the year 1979. The sentence means to say that the percentage reported in 1977 was 10 percent.

OC: E
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Re: According to surveys by the National Institute on Drug Abuse, about 20  [#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: According to surveys by the National Institute on Drug Abuse, about 20  [#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 Abuse, about 20  [#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 Abuse, about 20  [#permalink]

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Re: According to surveys by the National Institute on Drug Abuse, about 20   [#permalink] 20 Dec 2018, 07:36
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