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If x and y are positive integers, what is the value of x +

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If x and y are positive integers, what is the value of x + [#permalink] New post 30 Apr 2008, 01:55
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If x and y are positive integers, what is the value of x + y?
(1) 2^x3^y = 72
(2) 2^x2^y = 32
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Re: DS GMAT Prep [#permalink] New post 30 Apr 2008, 04:48
D. Break 72 up into its prime factors to get x=3 and y=2. x+y=5.suff

for stat 2, 2^x2^y = 2^(x+y) . 32 = 2^5, so x+y=5. suff.
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Re: DS GMAT Prep [#permalink] New post 30 Apr 2008, 05:25
japped187 wrote:
If x and y are positive integers, what is the value of x + y?
(1) 2^x3^y = 72
(2) 2^x2^y = 32


Straightforward. def. D.

No matter which way you arrange the numbers.
Re: DS GMAT Prep   [#permalink] 30 Apr 2008, 05:25
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