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# What is the value of y? (1) 3|(x^2) 4|=y 2 (2) |(3 y)|=11

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Manager
Joined: 25 May 2009
Posts: 140
Concentration: Finance
GMAT Date: 12-16-2011
What is the value of y? (1) 3|(x^2) 4|=y 2 (2) |(3 y)|=11 [#permalink]

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20 Jul 2009, 04:35
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What is the value of y?

(1) 3|(x^2)–4|=y–2

(2) |(3–y)|=11

OA=C, can someone please explain why A is not sufficient by showing work. Thanks

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Senior Manager
Joined: 23 Jun 2009
Posts: 353
Location: Turkey
Schools: UPenn, UMich, HKS, UCB, Chicago

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20 Jul 2009, 06:03
C.
1st statement says that y is positive. But can't see its value.
2nd statement says that absolute value of (3-y) is 11; but we do not know either y is positive or negative.
By taking both together we can find y's value.
Senior Manager
Joined: 23 Jun 2009
Posts: 353
Location: Turkey
Schools: UPenn, UMich, HKS, UCB, Chicago

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20 Jul 2009, 06:08
A is insuff because we do not know x
Intern
Joined: 11 Jul 2009
Posts: 20

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20 Jul 2009, 07:34
Can someone explain me how both statements together is sufficient..
Senior Manager
Joined: 23 Jun 2009
Posts: 353
Location: Turkey
Schools: UPenn, UMich, HKS, UCB, Chicago

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20 Jul 2009, 12:06
1st statement says that y is positive.
Since y is positive absolute value of (3-y) => y-3 =11 it can not be (3-y) becauseif 3-y=11; y becomes -8; but we know that y is positive.

--== Message from GMAT Club Team ==--

This is not a quality discussion. It has been retired.

If you would like to discuss this question please re-post it in the respective forum. Thank you!

To review the GMAT Club's Forums Posting Guidelines, please follow these links: Quantitative | Verbal Please note - we may remove posts that do not follow our posting guidelines. Thank you.
Re: Value of y?   [#permalink] 20 Jul 2009, 12:06
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