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If x and y are positive integers, what is the least common multiple of

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Bunuel
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If x and y are positive integers, what is the least common multiple of [#permalink] New post   18 Apr 2016, 01:03
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If x and y are positive integers, what is the least common multiple of x and y?

(1) y = 2x
(2) x = 3 × 2^2 × 5
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C
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Re: If x and y are positive integers, what is the least common multiple of [#permalink] New post   18 Apr 2016, 11:31
If x and y are positive integers, what is the least common multiple of x and y?

(1) y = 2x
(2) x = 3 × 2^2 × 5

1) We don't know what x is. LCM of x and 2x....NS
2) We have a number for x, but no idea what y is. NS
3) X is a number we know (60). y is 2 times that number (120). Sufficient.
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Re: If x and y are positive integers, what is the least common multiple of [#permalink] New post   18 Apr 2016, 18:36
If x and y are positive integers, what is the least common multiple of x and y?

(1) y = 2x
(2) x = 3 × 2^2 × 5

Value question.

Need to find out LCM (X,Y).

Statement I: y=2x is not sufficient. Because LCM of x and y(2x)depends on x. If x is 3 and y is 6 LCM is 6. However if x is 2 and y is 4, then LCM is 4.

Statement II - We have a value of x no info of y.

Statement I and II - We have values of x and y. Hence sufficient.

Answer C.
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Re: If x and y are positive integers, what is the least common multiple of [#permalink] New post   18 Sep 2018, 23:50
Bunuel wrote:
If x and y are positive integers, what is the least common multiple of x and y?

(1) y = 2x
(2) x = 3 × 2^2 × 5


Hi Brunel,

It is given in this question that x and y are positive integer, So will if be wrong to report answer in terms of x or y? if yes then could you please explain why it is wrong.
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Re: If x and y are positive integers, what is the least common multiple of [#permalink]
18 Sep 2018, 23:50
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Bunuel
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