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Re: If x is an integer, is (54 + 27)/x an integer ? [#permalink]
gmatbusters wrote:
If x is an integer, is (54+27)/x an integer
Statement 1: 6 <= x <= 81
Statement 2: x is a multiple of 3


Alone, either is obviously not sufficient.

Together, 81/x wI'll be integer for 3, 9, 27 and not integers other values such as 6, 12, 18...

E.
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Re: If x is an integer, is (54 + 27)/x an integer ? [#permalink]
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If x is an integer, is (54+27)/x an integer
Statement 1: 6 <= x <= 81
Statement 2: x is a multiple of 3

SOLUTION:

(54+27)/x = 81/x (for being an integer 81 should be wholly divided by x)

STATEMENT 1-
if, x= 9, yes
if, x= 12, no

BCE

STATEMENT 2 -
if, x=9, yes
if, x=12, no

now CE
if,x= 9, yes
if,x=12, no

ANSWER (E)
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Re: If x is an integer, is (54 + 27)/x an integer ? [#permalink]
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Re: If x is an integer, is (54 + 27)/x an integer ? [#permalink]
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