When does "Twice " and "Double" comes?

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Ashetty: Senior | Next Rank: 100 Posts; Posts: 49; Joined: Sun May 08, 2011 4:33 pm

When does "Twice " and "Double" comes?

by Ashetty » Sun Sep 18, 2011 4:57 pm

What is the logic we need follow?.When does "Twice" and "Double" comes?. I am lost not able to figure out..

The number of people flying first class on domestic flights rose sharply in 1990, doubling the increase of the previous year.
a)Doubling the increase of
b)Doubling that of the increase in
c)Double as much as the increase of
d)Twice as many as the increase in
e)Twice as many as the increase of.
Ans:A

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Source: Beat The GMAT — Sentence Correction | Sun Sep 18, 2011 4:57 pm

GmatKiss: Legendary Member; Posts: 2789; Joined: Tue Jul 26, 2011 12:19 am; Location: Chennai, India; Thanked: 206 times; Followed by:43 members; GMAT Score:640

by GmatKiss » Sun Sep 18, 2011 7:44 pm

Ashetty wrote:What is the logic we need follow?.When does "Twice" and "Double" comes?. I am lost not able to figure out..

The number of people flying first class on domestic flights rose sharply in 1990, doubling the increase of the previous year.
a)Doubling the increase of
b)Doubling that of the increase in
c)Double as much as the increase of
d)Twice as many as the increase in
e)Twice as many as the increase of.

quote]

IMO:A

Correct usage of double and twice!

The number of people flying first class on domestic flights rose sharply in 1990, which doubled last year's increase.

The number of people flying first class on domestic flights rose sharply in 1990, which is twice that of the previous year.

Please correct me if am wrong!

Regards,
GK

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gunjan1208: Master | Next Rank: 500 Posts; Posts: 416; Joined: Thu Jul 28, 2011 12:48 am; Thanked: 28 times; Followed by:6 members