SW4 wrote:

Is x < y?

(1) xz < yz

(2) –3x > 6y

1) z(x-y)<0

if z<0 then x-y>0----->x>y------>No

if z>0 then x-y<0------->x<y------->yes------>insuff....

2) -3x-6y>0

-3(x+2y)>0

x+2y<0

if x=0 y=-2 then y<x------>No

if x=-2,y=0 then y>x-------> yes----------> insuff..

Combining if x=0 , z=y=-2------->y<x----------->No.

But if x=-2,z=2,y=0---------then y>x-----------Yes..insuff..

Ans E