If x, y and z are nonzero number

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

13 Jan 2013, 06:21

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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

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

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?

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

13 Jan 2013, 07:31

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

15 Jan 2013, 09:36

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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, 09:36

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If x, y and z are nonzero number

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If x, y and z are nonzero number

If x, y and z are nonzero number

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