In the fraction x/y, where x and y are positive integers, : DS Archive
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# In the fraction x/y, where x and y are positive integers,

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In the fraction x/y, where x and y are positive integers, [#permalink]

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02 Aug 2009, 12:41
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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

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02 Aug 2009, 14:20
robertrdzak wrote:
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

(1): X/Y could be 1/2 or 1/6. Insuff.
(2): No info about y. Insuff.

Combined: Still same problem, cannot determine y. Hence, E
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02 Aug 2009, 20:19
[quote="robertrdzak"]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

from 1

y could be 2 or 6.......insuff

from 2

insuff

both
1/6 or 1/2........insuff.E
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02 Aug 2009, 21:54
agree with E.
same reason
Manager
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04 Aug 2009, 19:28
E is correct.

thanks for the explination.
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05 Aug 2009, 01:15
[quote]

1. Least denominator of x/y and 1/3 is 6 => y can be either 2 or 6, insuff -> B,C,E

2. x=1, deno of 1/y and 1/3 is 6 => y can be 2 or 6, insuff, -> C,E

1 & 2, together y can be 2 or 6 => insuff, then E is the answer.
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06 Aug 2009, 01:19
yezz wrote:
robertrdzak wrote:
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

from 1

y could be 2 or 6.......insuff

from 2

insuff

both
1/6 or 1/2........insuff.E

Sorry if my question sounds silly, but how do you calculate LCM for fractions? when i tried to instert 1/2 or 1/6 and 1/3 to an LCM calculator i did not get the result of 6.
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06 Aug 2009, 02:11
1
KUDOS
tomirisk wrote:
yezz wrote:
robertrdzak wrote:
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

from 1

y could be 2 or 6.......insuff

from 2

insuff

both
1/6 or 1/2........insuff.E

Sorry if my question sounds silly, but how do you calculate LCM for fractions? when i tried to instert 1/2 or 1/6 and 1/3 to an LCM calculator i did not get the result of 6.

L.C.M. of fraction = L.CM of numerator/H.C.F of denominator ......Also note that L.CM * H.C.F =PRODUCT OF NUMBERS...

but in thsi question it was asked only least common denominator and not of whole fraction....2 & 3 L.C.M is 6 ...also 3 & 6 L.C.M is 6....
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06 Aug 2009, 02:23
tomirisk wrote:
yezz wrote:
robertrdzak wrote:
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

from 1

y could be 2 or 6.......insuff

from 2

insuff

both
1/6 or 1/2........insuff.E

Sorry if my question sounds silly, but how do you calculate LCM for fractions? when i tried to instert 1/2 or 1/6 and 1/3 to an LCM calculator i did not get the result of 6.

Also, L.C.M of 1/2 & 1/3 will be 1....As H.C.F of 2 & 3 ..is 1
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Re: In the fraction x/y, where x and y are positive integers, [#permalink]

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22 Aug 2015, 11:58
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Re: In the fraction x/y, where x and y are positive integers, [#permalink]

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01 Nov 2016, 01:53
Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

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Re: In the fraction x/y, where x and y are positive integers,   [#permalink] 01 Nov 2016, 01:53
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# In the fraction x/y, where x and y are positive integers,

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