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# What is the value of y?

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Senior Manager
Joined: 21 Oct 2013
Posts: 418
What is the value of y?  [#permalink]

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02 Aug 2014, 05:16
1
5
00:00

Difficulty:

35% (medium)

Question Stats:

60% (01:01) correct 40% (01:05) wrong based on 143 sessions

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What is the value of y?

(1) |x+9|=y
(2) y^2=9
Math Expert
Joined: 02 Sep 2009
Posts: 53020
Re: What is the value of y?  [#permalink]

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02 Aug 2014, 07:59
1
1
What is the value of y?

(1) |x+9|=y. y is equal to the absolute value of some numbers, which implies that y must be more than or equal to 0 ($$y\geq{0}$$). That's the only thing we can deduce from this statement. Not sufficient.

(2) y^2=9 --> y = 3 or y = -3. Not sufficient.

(1)+(2) Since from (1) $$y\geq{0}$$, then from (2) y = 3. Sufficient.

Hope it's clear.
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Math Expert
Joined: 02 Sep 2009
Posts: 53020
Re: What is the value of y?  [#permalink]

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02 Aug 2014, 08:09
Bunuel wrote:
What is the value of y?

(1) |x+9|=y. y is equal to the absolute value of some numbers, which implies that y must be more than or equal to 0 ($$y\geq{0}$$). That's the only thing we can deduce from this statement. Not sufficient.

(2) y^2=9 --> y = 3 or y = -3. Not sufficient.

(1)+(2) Since from (1) $$y\geq{0}$$, then from (2) y = 3. Sufficient.

Hope it's clear.

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Hope this helps.
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Re: What is the value of y?  [#permalink]

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13 Oct 2018, 06:57
Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

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Re: What is the value of y?   [#permalink] 13 Oct 2018, 06:57
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# What is the value of y?

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