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Double or twice concept tested

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Double or twice concept tested

by gmat620 » Mon Mar 16, 2009 2:44 pm
I marked the correct answer but still not sure how to apply POE on this one....plz explain....I would really appreciate your help...thanks !!

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

OA after some explanations
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by krisraam » Mon Mar 16, 2009 5:11 pm
those is confusing here.

In place of "those" we should have some thing that modifies the number reported rather than the young adults.

E is the my answer.

Thanks
raama
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Re: Double or twice concept tested

by Nailya » Mon Mar 16, 2009 6:57 pm
Answer is E

(A) doubling those reported in the 1977 survey - sounds like doubling young adults instead of percentage
(B) to double the number the 1977 survey reported - awkward
(C) twice those the 1977 survey reported - those refers to young adults instead of numbers
(D) twice as much as those reported in the 1977 survey - twice as much means quantity of smth, much cannot refer to numbers
(E) twice the number reported in the 1977 survey - the best option
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by gmat620 » Tue Mar 17, 2009 12:36 am
OA:E.....thank you everyone !!
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by gmat740 » Tue Mar 17, 2009 12:47 am
(A) doubling those reported in the 1977 survey - sounds like doubling young adults instead of percentage
Good reason
(B) to double the number the 1977 survey reported - awkward
Although this is not awkward but yes this is a case of altered intent. here it means as if someone is responsible to double it.
D) twice as much as those reported in the 1977 survey - twice as much means quantity of smth, much cannot refer to numbers
Its wordy

Best tip for GMAT: whenever you are confused with two options,select the option which is less WORDY!!
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