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# In 1980, a college had 4,000 students, of whom 30% were women. In 2010

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Math Expert
Joined: 02 Sep 2009
Posts: 58434
In 1980, a college had 4,000 students, of whom 30% were women. In 2010  [#permalink]

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22 Jan 2019, 23:57
00:00

Difficulty:

25% (medium)

Question Stats:

82% (01:26) correct 18% (01:08) wrong based on 32 sessions

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In 1980, a college had 4,000 students, of whom 30% were women. In 2010, the college had 12,000 students, of whom 60% were women. By what percent did the number of women students in the college increase from 1980 to 2010?

A 100
B 200
C 400
D 500
E 600

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Joined: 11 Dec 2013
Posts: 121
Location: India
GMAT Date: 03-15-2015
WE: Education (Education)
Re: In 1980, a college had 4,000 students, of whom 30% were women. In 2010  [#permalink]

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23 Jan 2019, 01:07
1
In 1980, 30% were women
4000 * 30/100 = 1200
In 2010, 60% were women
12000*60/100 = 7200

Percentage increase is required
Hence Increase = 7200-1200 = 6000
% increase = 6000/1200 * 100 = 500
IMO D
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Re: In 1980, a college had 4,000 students, of whom 30% were women. In 2010   [#permalink] 23 Jan 2019, 01:07
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