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# If x, y and z are nonzero number

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Intern
Joined: 22 Oct 2012
Posts: 16
GMAT 1: 680 Q45 V38
Followers: 0

Kudos [?]: 25 [0], given: 4

If x, y and z are nonzero number [#permalink]

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13 Jan 2013, 06:21
00:00

Difficulty:

75% (hard)

Question Stats:

37% (02:27) correct 63% (02:17) wrong based on 78 sessions

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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
Joined: 22 Oct 2012
Posts: 16
GMAT 1: 680 Q45 V38
Followers: 0

Kudos [?]: 25 [0], given: 4

Re: If x, y and z are nonzero number [#permalink]

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13 Jan 2013, 06:30
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?
Math Expert
Joined: 02 Sep 2009
Posts: 32511
Followers: 5620

Kudos [?]: 68152 [1] , given: 9797

Re: If x, y and z are nonzero number [#permalink]

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13 Jan 2013, 07:31
1
KUDOS
Expert's post
maglian wrote:
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

None of the options equal to 2 if x=2, y=4 and z=6. Can you please check the question?
_________________
Manager
Joined: 18 Oct 2011
Posts: 90
Location: United States
Concentration: Entrepreneurship, Marketing
GMAT Date: 01-30-2013
GPA: 3.3
Followers: 2

Kudos [?]: 51 [2] , given: 0

Re: If x, y and z are nonzero number [#permalink]

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15 Jan 2013, 09:36
2
KUDOS
after re-arranging the variables, 2 should be = (x+z)/(y)
Re: If x, y and z are nonzero number   [#permalink] 15 Jan 2013, 09:36
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