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Is |x|=y-z?

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Is |x|=y-z?  [#permalink]

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New post 27 Jun 2011, 20:19


  25% (medium)

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69% (01:02) correct 31% (01:10) wrong based on 68 sessions

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Is \(|x|=y-z\) ?

(1) \(x+y=z\)
(2) \(x<0\)


GMAT done - a mediocre score but I still have a lot of grit in me

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Re: Is |x|=y-z?  [#permalink]

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New post 27 Jun 2011, 20:32
akhileshgupta05 wrote:
is \(|x|=y-z\) ?


Please give detailed explanation for your answer.

|X|= y-z means;
X>0; X= Y-Z
X<0; -X= Y-Z ; X= Z-Y

St1: X= Z-Y We dont know if X>0 or <0 ............ insufficient

St2: X<0 ; when dont know about Y and Z ......... insufficient

1&2 : we know X<0 and X= Z-Y hence sufficient
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Re: Is |x|=y-z?  [#permalink]

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New post 27 Jun 2011, 20:39
is |x| = y-z?

1. Not sufficient

x+y =z
=> y-z = -x

if x<0 y-z = |x|

if x>=0 y-z = -|x|

2. Not sufficient
we dont know anything about y or z or their relation to x.


Sufficient , as y-z = |x|

Answer is C.
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Re: Is |x|=y-z?  [#permalink]

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New post 09 Nov 2017, 23:40
Hello from the GMAT Club BumpBot!

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Re: Is |x|=y-z? &nbs [#permalink] 09 Nov 2017, 23:40
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