What is the value of |x + 7| =? (1) |x + 3|= 14 (2) (x + : DS Archive
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# What is the value of |x + 7| =? (1) |x + 3|= 14 (2) (x +

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What is the value of |x + 7| =? (1) |x + 3|= 14 (2) (x + [#permalink]

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19 May 2008, 19:35
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What is the value of |x + 7| =?
(1) |x + 3|= 14
(2) (x + 2)^2 = 169
A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
D. EACH statement ALONE is sufficient.
E. Statements (1) and (2) TOGETHER are NOT sufficient.

IMO, it is C. But OA says it is D? Can the DS gurus step in and help.
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Re: DS - A simple question (source Beat the GMAT Forums) [#permalink]

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19 May 2008, 19:40
I guess you are right. It is C.

(1) |x + 3|= 14 --> x e {-17,11} --> |x+7| can be 10 or 18. insufficient
(2) (x + 2)^2 = 169 --> |x+2|=13 --> x e {-15,11} --> |x+7| can be 8 or 18. insufficient
(1&2) x=11 --> |x+7|=18. sufficient
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Re: DS - A simple question (source Beat the GMAT Forums) [#permalink]

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21 May 2008, 00:45
I am also getting C. Any explanation for D
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Re: DS - A simple question (source Beat the GMAT Forums) [#permalink]

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21 May 2008, 03:44
i also think it should be C
(1) |x + 3|= 14 --> x is either 11 or -17 so |x + 7| will have two answers. INSUFFICIENT
(2) (x + 2)^2 = 169 --> x is either -15 or 11 --> |x+7| can be 8 or 18. INSUFFICIENT

But (1) and (2) together give commmon value of x i.e 11
Re: DS - A simple question (source Beat the GMAT Forums)   [#permalink] 21 May 2008, 03:44
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