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Quickest possible way to solve this DS quesiton?

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by netigen » Sun May 18, 2008 3:03 pm
Need help with the quickest possible way to solve this Kaplan question
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Source: — Data Sufficiency |
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by Alejandro » Sun May 18, 2008 3:46 pm
Hi, the answer its b, because if you know that y is multiple of x yo also know that y and x are related, so even in you multiply by 2 you will have a multiple of y, statement 1 is insufficient because you dont know if the +2 wil give you a multiple
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by netigen » Sun May 18, 2008 3:56 pm
x=3 and y=6
2x=6 so y is a multiple

x=4 and y=12
2x=8 so y is not a multiple

b does not hold in this case
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by luvaduva » Mon May 19, 2008 12:19 am
Picking numbers is the quickest way.

This problem is in the Kaplan 800 guide.

For (1) and (2):

x = 2, y = 6 => (2x +2)/y = 1; y/x = 3; 2x/y = 4/6 - Not integer
x = 2, y = 2 => (2x +2)/y = 3; y/x = 1; 2x/y = 2 = Integer

Not Sufficient.

E is OA
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by moneyman » Mon May 19, 2008 6:59 am
I agree ..Ans should be E
Maxx
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