Either B or E. See the bold part below.

Question is

X-Y < 0 ???

St1: X^2/(XY+X) Since both X and Y are +ve both numerator and denominator are +ve and we can rewrite the equation as

X^2 < XY+X

X < Y+1

X-Y <1: INSUFF

St2:

I am not sure if statement says XY/(Y^2-Y) OR (XY/Y^2)-Y
In case of XY/(Y^2-Y) <1

XY < Y^2 - Y

X < Y-1

X-Y < -1 : SUFF

In case of (XY/Y^2)-Y < 1

X/Y < Y

X < Y^2

X-Y^2 < 0 then X-Y could be +ve (For X = 5 and Y = 4) or -ve (for X = 5 and Y = 6): INSUFF

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SAID BUSINESS SCHOOL, OXFORD - MBA CLASS OF 2008