Of the companies surveyed about the skills they required in

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Of the companies surveyed about the skills they required in [#permalink]

25 Jun 2012, 03:08

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The Official Guide for GMAT® Review, 13th Edition - Quantitative Questions Project

Of the companies surveyed about the skills they required in prospective employees, 20 percent required both computer skills and writing skills. What percent of the companies surveyed required neither computer skills nor writing skills?

(1) Of those companies surveyed that required computer skills, half required writing skills.
(2) 45 percent of the companies surveyed required writing skills but not computer skills.

Diagnostic Test
Question: 34
Page: 25
Difficulty: 700

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GMAT Club team member

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Re: Of the companies surveyed about the skills they required in [#permalink]

29 Jun 2012, 05:18

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SOLUTION

Of the companies surveyed about the skills they required in prospective employees, 20 percent required both computer skills and writing skills. What percent of the companies surveyed required neither computer skills nor writing skills?

(1) Of those companies surveyed that required computer skills, half required writing skills.
(2) 45 percent of the companies surveyed required writing skills but not computer skills.

You can draw a Venn diagram or make a matrix to solve this question.

Note that statement (1) says that "of those companies surveyed that required computer skills, half required writing skills" --> if y required computer skills, then of those y who required computer skills, \frac{y}{2} also required writing skills (# of companies required computer and writing skills is \frac{y}{2}=20).

Attachment:

Skills.JPG [ 52.83 KiB | Viewed 1291 times ]

Answer: C.
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Re: Of the companies surveyed about the skills they required in [#permalink]

16 Nov 2012, 05:58

Bunuel wrote:

Diagnostic Test
Question: 34
Page: 25
Difficulty: 700

Hi Bunuel - Im not able to access the below link. Im getting an error message that reads "you are NOT authorized"

can you please assist.

The Official Guide for GMAT® Review, 13th Edition - Quantitative Questions Project

Cheers

Re: Of the companies surveyed about the skills they required in [#permalink] 16 Nov 2012, 05:58

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Of the companies surveyed about the skills they required in

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