Are x and y both positive,
1.) 2x-2y = 1
2.) x/y > 1
GMAT prep question. Please post OA and explanation
1.) 2x-2y = 1
2.) x/y > 1
GMAT prep question. Please post OA and explanation
IMO C
from 1, x-y=.5
Picking nos x-=-.5 and y=-1 or x=1 and y=.5 Hence not sufficient
from 2, x/y>1 => sign of both x and y are same and |x|>|y|
picking no, x=-3, y=-2 or x=3,y=2, both satisfy, hence not sufficient
combining, since x-y=+ve no, hence x>y so we cannot have both nos as negative and there diff as positive, when |x|>|y|
Therefore x and y have to be +ve, hence C
