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In the fraction x/y, where x and y are positive integers, wh

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victorgsiu
 Post subject: In the fraction x/y, where x and y are positive integers, wh
 Post Posted: Mon Oct 26, 2009 7:28 pm 
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Posts: 32
In the fraction x/y, where x and y are positive integers, what is the value of y?

1) The least common denominator of x/y and 1/3 is 6.
2) x = 1

Statement 2)
Says nothing about y, insufficient.

Statement 1)
rephrase: the LCM of y and 3 is (2)(3). Draw an LCM chart. 3 has one (3), so y MUST have one (2). additionally, y may also have an additional (3), without changing the LCM. Therefore, y can be (2) OR (2)(3). Insufficient.

Together)
y = (2) or (2)(3)
x = 1, does not affect the denominator.
Still insufficient. E.

Was what I did in Statement 1 appropriate, and did I solve this problem in the best way possible?
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agha79
 Post subject: Re: In the fraction x/y, where x and y are positive integers, wh
 Post Posted: Fri Oct 30, 2009 9:39 pm 
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Course Students


Posts: 99
I agree with your approach for statment one. Thats what i did as well and got to "E"
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Ben Ku
 Post subject: Re: In the fraction x/y, where x and y are positive integers, wh
 Post Posted: Thu Dec 03, 2009 4:02 am 
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ManhattanGMAT Staff


Posts: 824
Your approach is good!

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Ben Ku
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ManhattanGMAT
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