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What is the ratio of y to x?

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devang.lakhani
 Post subject: What is the ratio of y to x?
 Post Posted: Sun Aug 02, 2009 7:45 pm 
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Students


Posts: 11
What is the ratio of y to x?

(1) y = 3x

(2) x = 11

This is a DS question. The answer assumes that x is not equal to 0 in option (1). Is that fine?

Regards,

Devang
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venkat_yj
 Post subject: Re: What is the ratio of y to x?
 Post Posted: Tue Aug 04, 2009 12:17 am 
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Students


Posts: 16
Yes, x cannot be zero as y/x=3. If x were zero, y/x would have been undefined.
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RonPurewal
 Post subject: Re: What is the ratio of y to x?
 Post Posted: Thu Aug 13, 2009 6:35 am 
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ManhattanGMAT Staff


Posts: 7146
ah, no, the first poster is correct.

"y = 3x" is not equivalent to "y/x = 3", because the latter requires that x be nonzero, while x = 0 and y = 0 is a perfectly acceptable solution to the former.

so, yes, we need to add the stipulation that x be nonzero.

thanks. we will edit the problem.
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venkat_yj
 Post subject: Re: What is the ratio of y to x?
 Post Posted: Fri Aug 14, 2009 6:15 pm 
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Students


Posts: 16
thanks for correcting. Missed that one!
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Ben Ku
 Post subject: Re: What is the ratio of y to x?
 Post Posted: Tue Sep 01, 2009 6:00 am 
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ManhattanGMAT Staff


Posts: 823
:-)

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Ben Ku
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ManhattanGMAT
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yousuf_azim
 Post subject: Re: What is the ratio of y to x?
 Post Posted: Mon Sep 12, 2011 1:36 pm 
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Students


Posts: 45
What is the ans?

BR
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jnelson0612
 Post subject: Re: What is the ratio of y to x?
 Post Posted: Mon Oct 17, 2011 12:30 am 
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ManhattanGMAT Staff


Posts: 1857
yousuf_azim wrote:
What is the ans?

BR


The answer should be A.

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Jamie Nelson
ManhattanGMAT Instructor
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