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# In a certain classroom, there are 80 books, of which 24 are

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Manager
Status: Its Wow or Never
Joined: 11 Dec 2009
Posts: 181
Location: India
Concentration: Technology, Strategy
GMAT 1: 670 Q47 V35
GMAT 2: 710 Q48 V40
WE: Information Technology (Computer Software)
In a certain classroom, there are 80 books, of which 24 are  [#permalink]

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09 Jun 2010, 12:00
2
5
00:00

Difficulty:

25% (medium)

Question Stats:

80% (01:57) correct 20% (01:46) wrong based on 314 sessions

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In a certain classroom, there are 80 books, of which 24 are fiction and 23 are written in Spanish. How many of the fiction books are written in Spanish?

(1) Of the fiction books, there are 6 more that are not written in Spanish than are written in Spanish.
(2) Of the books written in Spanish, there are 5 more nonfiction books than fiction books.

Official Guide 12 Question

 Question: 47 Page: 26 Difficulty: 700

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Joined: 02 Sep 2009
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Re: In a certain classroom, there are 80 books, of which 24 are  [#permalink]

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09 Jun 2010, 16:17
5
1
In a certain classroom, there are 80 books, of which 24 are fiction and 23 are written in Spanish. How many of the fiction books are written in Spanish?

Given:
Attachment:

Fiction1.JPG [ 10.74 KiB | Viewed 8790 times ]

(1) Of the fiction books, there are 6 more that are not written in Spanish than are written in Spanish.
Attachment:

Fiction2.JPG [ 10.95 KiB | Viewed 8797 times ]
So, $$x+x+6=24$$ --> $$x=9$$. Sufficient.

(2) Of the books written in Spanish, there are 5 more nonfiction books than fiction books
Attachment:

Fiction3.JPG [ 11 KiB | Viewed 8737 times ]
So, $$x+x+5=23$$ --> $$x=9$$. Sufficient.

Answer: D. (Total # of books is redundant information).

Hope it helps.
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Math Expert
Joined: 02 Sep 2009
Posts: 49430
Re: In a certain classroom, there are 80 books, of which 24 are  [#permalink]

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28 Nov 2017, 02:46
mojorising800 wrote:
In a certain classroom, there are 80 books, of which 24 are fiction and 23 are written in Spanish. How many of the fiction books are written in Spanish?

(1) Of the fiction books, there are 6 more that are not written in Spanish than are written in Spanish.
(2) Of the books written in Spanish, there are 5 more nonfiction books than fiction books.

Official Guide 12 Question

 Question: 47 Page: 26 Difficulty: 700

Find All Official Guide Questions

Video Explanations:

OPEN DISCUSSION OF THIS QUESTION IS HERE: https://gmatclub.com/forum/in-a-certain ... 35831.html
_________________
Re: In a certain classroom, there are 80 books, of which 24 are &nbs [#permalink] 28 Nov 2017, 02:46
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# In a certain classroom, there are 80 books, of which 24 are

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