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If x and y are integers and x > 0, is y > 0? (1) 7x 2y

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Joined: 03 Apr 2007
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If x and y are integers and x > 0, is y > 0? (1) 7x 2y [#permalink] New post 10 Jul 2008, 22:46
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If x and y are integers and x > 0, is y > 0?
(1) 7x – 2y > 0
(2) -y < x
Director
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Re: DS-x,y [#permalink] New post 11 Jul 2008, 00:49
E.

Draw a xy co-ordinate system.

select the area x > 0 ...

statement 1 : all the area lright of line y = 7/2 x .... Not suff

statement 2 : all the area right of line y = -x .... Not suff

Combine : still not suff....
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Re: DS-x,y [#permalink] New post 11 Jul 2008, 04:09
durgesh79,

I can see you are very good and fast at quant with your "cartesian" approach. Can you suggest some resources on how to apply it?
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Re: DS-x,y [#permalink] New post 11 Jul 2008, 05:46
Paradosso wrote:
durgesh79,

I can see you are very good and fast at quant with your "cartesian" approach. Can you suggest some resources on how to apply it?


Thanks for your words... but I'm sorry i cant help you with any specific resources (books or sites)....
whenever you see two variables and inequalities, this could be one approach....
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Re: DS-x,y [#permalink] New post 11 Jul 2008, 05:58
This is a Yes or No tpe of Question....So from the question stem we can expect that n the answers choices some relation between X and Y should be present.
from satement 1 we get 7x>2y so y can take values form 3 to - infinity insuff
from statement 2 we get that y>-x so it can have values from 0,1,......,infinity so insuff

combining aslso no result so E

goalsnr wrote:
If x and y are integers and x > 0, is y > 0?
(1) 7x – 2y > 0
(2) -y < x

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Every Problem Has a Sloution So keep working
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Re: DS-x,y   [#permalink] 11 Jul 2008, 05:58
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If x and y are integers and x > 0, is y > 0? (1) 7x 2y

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