Bunuel wrote:
If (x + 1)y = 4, what is the value of x ?
(1) xy = 2
(2) y > 0
Asked: If (x + 1)y = 4, what is the value of x ?
xy + y = 4
(1) xy = 2
2 + y = 4
y = 2
x = y/2 = 2/2 =1
SUFFICIENT
(2) y > 0
x = 4/y -1 ; x will change with change in value of y
NOT SUFFICIENT
IMO A
