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All first-year students at Red State University must take c

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All first-year students at Red State University must take c [#permalink] New post 23 May 2017, 08:51
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All first-year students at Red State University must take calculus, English composition, or both. If half of the 2,400 first-year students at Red State University take calculus and half do not, and one-third of those who take calculus also take English composition, how many students take English composition?

A) 400

B) 800

C) 1,200

D) 1,600

E) 2,000
[Reveal] Spoiler: OA

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Re: All first-year students at Red State University must take c [#permalink] New post 10 Oct 2017, 08:15
Half of 2400 students take calculus and half not. So we have 1220 students taking calculus and 1200 students taking English composition. One third of students taking calculus also take English composition, i.e. 1200/3 = 400 students take both.

Thus, if we are asked how many students take English composition we have 1200 taking only it + 400 taking both calculus and English = 1600. Answer E
Re: All first-year students at Red State University must take c   [#permalink] 10 Oct 2017, 08:15
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All first-year students at Red State University must take c

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