Is x + y positive ?
(1) x- y is positive .
(2) y - x is negative .
(1) x- y is positive .
(2) y - x is negative .
"Know thyself" and "Nothing in excess"
IMO (E).rockeyb wrote:
Is x + y positive ?
(1) x- y is positive .
(2) y - x is negative .
Question can be rephrased as is x + y > 0
With statement (1),
x - y > 0
i.e. x > y
if both x and y are positive then
is x + y > 0
YES
but if both x and y are negative (example, x = -2 and y = -3) then
is x + y > 0
NO
Since you get YES and NO for the 1st statement, hence INSUFFICIENT
Statement 2 is nothing but rephrased of statement (1).
i.e
y - x < 0
y < x
x > y
Hence, statement (2) is also INSUFFICIENT
Together also both statements are INSUFFICIENT
Choose (E)
