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Inequalities DS Question

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terp_in_umcp
 Post subject: Inequalities DS Question
 Post Posted: Tue May 31, 2011 5:47 am 
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Students


Posts: 5
Hi. I am having the hardest time with Inequalities questions. Can someone guide me to some good material. I have already gone through Manhattan Inequality chapter but questions like this one just shake me to the core :(

1) If (x/y)>2 , is 3x+2y<18?

(1) x-y is less than 2
(2) y-x is less than 2

I tried picking smart numbers but didnt get any far...

Thanks in advance....
Divz
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Markus_Maier
 Post subject: Re: Inequalities DS Question
 Post Posted: Thu Jun 02, 2011 11:28 am 
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Students


Posts: 3
Hmmm, I would make a chart with y>0 and y<0. What is the official answer? I'd guess A.
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jnelson0612
 Post subject: Re: Inequalities DS Question
 Post Posted: Fri Jun 03, 2011 6:48 pm 
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ManhattanGMAT Staff


Posts: 1857
Will you please provide the original source for this problem?

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Jamie Nelson
ManhattanGMAT Instructor
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karan13
 Post subject: Re: Inequalities DS Question
 Post Posted: Sat Jun 04, 2011 6:56 am 
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Students


Posts: 27
hi this is a tough one....
just trying this i cud be wrong... either ways i would like to know the right answer.

from the question stem x/y>2 this can only be true if X and y are positive or if both are negative.
1. this says x-y<2
now keep in mind the condition above if you try +nos x =15 and y =5. this will satisfy the question stem condiotn but fail 1. now if we take neg x= -15 and y =-5 then stem conditon satisfied but fails 1 condtiton there we move to smaller nos. x=3 y =1 this fails 1 as well. therefore fractions will satisfy all stem conditions and 1 coddition and will also answer your question 3x+2y<18 therefore we get a yes and this is sufficient.

2.this says y-x<2 again only fractions will satisfy it and answer is sufficient

Therefore my best answer is D. Please let me know what the correct answer is.
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weng.enna
 Post subject: Re: Inequalities DS Question
 Post Posted: Sat Jun 04, 2011 3:22 pm 
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Course Students


Posts: 1
or you can solve the question 3x+2y<18 is equivalent to x+y<6. Believe the answer is D.
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karan13
 Post subject: Re: Inequalities DS Question
 Post Posted: Sun Jun 05, 2011 4:47 am 
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Students


Posts: 27
how does the equation come to x+y<18?????
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jnelson0612
 Post subject: Re: Inequalities DS Question
 Post Posted: Sun Jun 05, 2011 8:51 am 
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ManhattanGMAT Staff


Posts: 1857
Still looking for original source of the problem . . . after one week we are required to delete threads that do not contain this information.

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Jamie Nelson
ManhattanGMAT Instructor
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