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If x and y are integers and 450x = 120y, which of the following [b]mus

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Intern
Intern
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B
Joined: 08 Jul 2017
Posts: 38
GMAT 1: 620 Q48 V29
If x and y are integers and 450x = 120y, which of the following [b]mus  [#permalink]

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New post 21 Apr 2018, 01:27
00:00
A
B
C
D
E

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(N/A)

Question Stats:

50% (10:24) correct 50% (00:14) wrong based on 4 sessions

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. If x and y are integers and 450x = 120y, which of the following must be an
integer?
(1) xy/60
(2) 15x/4y
(3) 4x/15y

(A) I only
(B) II only
(C) I and III only
(D) I and II only
(E) I, II, and III


I am not ok with official answer. please explain.
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Joined: 02 Sep 2009
Posts: 58434
Re: If x and y are integers and 450x = 120y, which of the following [b]mus  [#permalink]

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New post 21 Apr 2018, 01:34
GMAT Club Bot
Re: If x and y are integers and 450x = 120y, which of the following [b]mus   [#permalink] 21 Apr 2018, 01:34
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If x and y are integers and 450x = 120y, which of the following [b]mus

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