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# What is the number of pages of a certain journal article? The size of

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Math Expert
Joined: 02 Sep 2009
Posts: 56302
What is the number of pages of a certain journal article? The size of  [#permalink]

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21 Jun 2018, 08:50
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96% (00:35) correct 4% (00:37) wrong based on 1065 sessions

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What is the number of pages of a certain journal article?

(1) The size of each page is $$5 \frac{1}{2}$$ inches by 8 inches.

(2) The average (arithmetic mean) number of words per page is 250.

NEW question from GMAT® Official Guide 2019

(DS02562)

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Re: What is the number of pages of a certain journal article? The size of  [#permalink]

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21 Jun 2018, 09:35
1
We need to find the number of pages.

Statement 1 gives us the dimensions of each page. This alone is insufficient without the dimensions of the entire book.
Statement 2 gives us the average number of words per page. This alone is insufficient without the overall number of pages of the entire book.

The two statements together are still insufficient to find the number of pages.

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Re: What is the number of pages of a certain journal article? The size of  [#permalink]

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22 Jun 2018, 10:48

Solution

To find:
• The number of pages of a certain journal article

Analysing Statement 1
• As per the information given in statement 1, the size of each page is 11/2 inches by 8 inches
o From this, we can’t find out the number of pages in that article

Hence, statement 1 is not sufficient to answer

Analysing Statement 2
• As per the information given in statement 2, the average number of words per page is 250
o From this, we can’t find out the number of pages in that article

Hence, statement 2 is not sufficient to answer

Combining Both Statements
if we combine both the statements, we get
• Size of each page is 11/2 inches by 8 inches
• Average number of words per page is 250

But, even from these information, we can’t find out the number of pages in that journal article

Hence, the correct answer is option E.

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Re: What is the number of pages of a certain journal article? The size of  [#permalink]

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08 Jul 2018, 23:13
1
[quote="Bunuel"]What is the number of pages of a certain journal article?

(1) The size of each page is $$5 \frac{1}{2}$$ inches by 8 inches.

(2) The average (arithmetic mean) number of words per page is 250.

Total number of pages in a journal=Total no of words in the journal/No of words per page or Avg, no of words per page.

St1:-Dimension of page is given.Irrelevant info to determine no of pages.
Insufficient.
St2:-Avg. no of words per page is given, still we need the total no of words in the journal to determine the no of pages.
insufficient.

Combining, we have the same deficiency of information.
hence, insufficient.

Ans.(E)
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Re: What is the number of pages of a certain journal article? The size of   [#permalink] 08 Jul 2018, 23:13
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