Is x < y?

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Is x < y?

by gmatmachoman » Sun May 09, 2010 6:53 am
Is x < y?

(1) The ratio of x to y is 7/9
(2) xy>0

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by mmslf75 » Sun May 09, 2010 7:23 am
gmatmachoman wrote:Is x < y?

(1) The ratio of x to y is 7/9
(2) xy>0[/quote}

IMO E

Stm1

X/Y = 7/9
X=7 and Y=9 therefore, X < Y

X/Y = (-7)/(-9)
X=-7 and Y=-9 therefore, X > Y

Thus, Stm1 INVALID

Stm2
XY>0

-7 * -9 > 0
X = -7, Y = -9 therefore, X > Y
X = -9, Y = -7 therefore, X < Y

9 * 7 > 0
X = 9, Y = 7 therefore , X > Y
X = 7, Y = 9 therefore, Y > X


Combining Stm1 and Stm2

We have
XY > 0 and X / Y = 7 / 9

Implies,
Case 1
X is -7 and Y is - 9

OR

Case 2
X is 7 and Y is 9

In Case 1.... X > Y
and In Case 2 X < Y


Therfore, IMO E



What's the OA ?

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by gmatmachoman » Sun May 09, 2010 7:33 am
hahahaha Ashish Bhai..welcome back my Bro.......


yeah OA is E indeed....