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Source: — Data Sufficiency |
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by eaakbari » Thu Apr 15, 2010 7:48 pm
IMO E


(1)

xy=5y

If y is not equal to 0, then x = 5
If y = 0 , we cannot determine

Hence Insuff


(2)

proves that (x-y)(x+y)=0
So either x = y or x = -y


Combined
Still Insuff

Hence E
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by gmatmachoman » Fri Apr 16, 2010 12:24 am
Nice explanation bro!!

I dont have anything more to say!! Awesome!!


Its indeed E
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by eaakbari » Fri Apr 16, 2010 10:57 am
gmatmachoman wrote:Nice explanation bro!!

I dont have anything more to say!! Awesome!!


Its indeed E
Thanks bud. Sure feels good when you say it
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E
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