bitnara wrote:Is xy>0?
1)x+y>0
2)x/y>0
xy > 0 if x and y are the SAME SIGN.
Question stem, rephrased:
Are x and y the SAME SIGN?
Statement 1: x+y > 0
It's possible that x=1 and y=1, in which case x and y are the same sign.
It's possible that x=10 and y=-1, in which case x and y are NOT the same sign.
INSUFFICIENT.
Statement 2: x/y > 0
x/y > 0 implies that x and y are the SAME SIGN.
SUFFICIENT.
The correct answer is
B.
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