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Is |x| = y-z ? 1. x+y =z 2. x < 0

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Intern
Joined: 18 Jul 2008
Posts: 34
Is |x| = y-z ? 1. x+y =z 2. x < 0 [#permalink]

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12 Aug 2008, 10:44
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Is |x| = y-z ?

1. x+y =z

2. x < 0
Manager
Joined: 15 Jul 2008
Posts: 205

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12 Aug 2008, 11:00
I think C.

Question is |x| = y-z. |x| > 0 always. So y-z >0. So we need to find if y>z.

1) x+y = z. Insufficient. if x>0 then y<z, if x<0 then y>z and if x=o then y=z.

2) x<0. Insufficient. it does not say if y>z.

Combined we get x+y=z where x<0. So y>z.

C
Re: DS 2: gmatperp   [#permalink] 12 Aug 2008, 11:00
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