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If (x+y)/z) > 0, is x < 0? 1) x < y 2) z < 0 [#permalink ]
25 Apr 2008, 05:29

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If (x+y)/z) > 0, is x < 0? 1) x < y 2) z < 0

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Re: DS: OG Number Properties [#permalink ]
25 Apr 2008, 08:37

I'd say it's E. (1) x<y doesn't say anything about z let's take x=-2, y= 3, z= 1 => 1>0 true x=2, y=3, z= -3 => 1>0 true Not suff (2) z<0, doesn't say anything about x and y not suff (1)(2) x<y, z<0 x=-1, z = -1, y=1 => -2<0 true x=1, z = -1, y=2 => -1<0 true Not suff

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Re: DS: OG Number Properties [#permalink ]
25 Apr 2008, 09:03

ignore my previous post. I should stop doing this at work

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Re: DS: OG Number Properties [#permalink ]
25 Apr 2008, 13:23

jimmyjamesdonkey wrote:

If (x+y/z) > 0, is x < 0? 1) x < y 2) z < 0

Given (x+y)/z> 0 there are only two combinations possible

1) (X+Y)<0 ;z<0

2)(X+Y)>0 ; z>0

S1 = only gives information about relationship betn x and y , insuff

S2 = no info about x and y so insuff

combining two , we know for sure (X+Y) must be less than 0 , and since x<y per S1, x has to be less than 0 , so I would go for answer C

any comments?

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Re: DS: OG Number Properties [#permalink ]
25 Apr 2008, 13:31

rpmodi wrote:

jimmyjamesdonkey wrote:

If (x+y/z) > 0, is x < 0? 1) x < y 2) z < 0

Given (x+y)/z> 0 there are only two combinations possible

1) (X+Y)<0 ;z<0

2)(X+Y)>0 ; z>0

S1 = only gives information about relationship betn x and y , insuff

S2 = no info about x and y so insuff

combining two , we know for sure (X+Y) must be less than 0 , and since x<y per S1, x has to be less than 0 , so I would go for answer C

any comments?

sorry I goofed up it is X+Y/Z , not (X+Y)/Z !!! I will also join the league of "not solving problems at work"

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Re: DS: OG Number Properties [#permalink ]
26 Apr 2008, 10:59

rpmodi wrote:

I will also join the league of "not solving problems at work"

I got barred from accessing GMATClub forum at work

Shucks ......

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Re: DS: OG Number Properties [#permalink ]
27 Apr 2008, 16:49

I of course lost the answer to this...anyone have the OA. I believe it to be E as well.

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Re: DS: OG Number Properties [#permalink ]
27 Apr 2008, 17:48

jimmyjamesdonkey wrote:

I of course lost the answer to this...anyone have the OA. I believe it to be E as well.

E should be for that jimmyjamesdonkey wrote:

If (x+y/z) > 0, is x < 0? 1) x < y 2) z < 0

:

And C be for the original, I met it last night!

if (x+y)/z >0, is x<0?

1. x<y

2. z<0

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Re: DS: OG Number Properties [#permalink ]
27 Apr 2008, 17:58

Sod, are you saying its E for (X+Y)/z I had a typo with the brackets in the original, but just fixed it.

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Re: DS: OG Number Properties [#permalink ]
28 Apr 2008, 09:18

jimmyjamesdonkey wrote:

Sod, are you saying its E for (X+Y)/z I had a typo with the brackets in the original, but just fixed it.

if it is (X+Y)/Z then in my opinion answer definitely is C, look at my explanation , someone please give me the reasoning if OA is E .

Re: DS: OG Number Properties
[#permalink ]
28 Apr 2008, 09:18

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