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If x, y and z are nonzero number

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Intern
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Joined: 22 Oct 2012
Posts: 16
GMAT 1: 680 Q45 V38
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Kudos [?]: 22 [0], given: 4

If x, y and z are nonzero number [#permalink] New post 13 Jan 2013, 05:21
00:00
A
B
C
D
E

Difficulty:

  85% (hard)

Question Stats:

36% (02:26) correct 64% (02:16) wrong based on 75 sessions
If x, y and z are nonzero numbers and x – 2y = –z, which of the following is equal to 2?

A (x-y)/z

B (x+y)/z

C (x-z)/y

D (z-x)/y

E (z+y)/-x
[Reveal] Spoiler: OA
Intern
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Joined: 22 Oct 2012
Posts: 16
GMAT 1: 680 Q45 V38
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Kudos [?]: 22 [0], given: 4

Re: If x, y and z are nonzero number [#permalink] New post 13 Jan 2013, 05:30
Ok. I plugged in x=5 y=3 so 5-2(3)=5-6=-1 therefor z=1

a. (5-3)/1=2

b. (5+3)/1=8

i get A. Can you please explain?
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Kudos [?]: 62586 [1] , given: 9457

Re: If x, y and z are nonzero number [#permalink] New post 13 Jan 2013, 06:31
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Joined: 18 Oct 2011
Posts: 90
Location: United States
Concentration: Entrepreneurship, Marketing
GMAT Date: 01-30-2013
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Kudos [?]: 48 [2] , given: 0

Re: If x, y and z are nonzero number [#permalink] New post 15 Jan 2013, 08:36
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after re-arranging the variables, 2 should be = (x+z)/(y)
Re: If x, y and z are nonzero number   [#permalink] 15 Jan 2013, 08:36
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If x, y and z are nonzero number

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