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SVP
Joined: 30 Oct 2003
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if X is integer > 0 and 4/x + 5/x + 6/x is also integer [#permalink]
09 Feb 2004, 09:50
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if X is integer > 0 and 4/x + 5/x + 6/x is also integer then which of the following is also an integer ?
1) x/5
2) 5/x
3) x/30
4) 30/x
5) x/120
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GMAT Club Legend
Joined: 15 Dec 2003
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Answer is D
[4+5+6]/X = 15/X
D is 2 * 15/X = 30/X
_________________
Best Regards,
Paul
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GMAT Club Legend
Joined: 15 Dec 2003
Posts: 4441
Followers: 10
Kudos [?]:
82
[0], given: 0
|
Answer is D
[4+5+6]/X = 15/X
D is 2 * 15/X = 30/X
_________________
Best Regards,
Paul
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SVP
Joined: 30 Oct 2003
Posts: 1963
Location: NewJersey USA
Followers: 3
Kudos [?]:
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D is right I
did it differently.
we have 15/X X can be 1,3,5,15
Only 30 is divisible all these integers.
hi paul,
u double posted u r answer. Your approach is good too.
Anand.
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