If a, b and c are in GP and a1/x=b1/y=c1/z. The value of 2y is?

1.	If a, b and c are in GP and a^1/x=b^1/y=c^1/z. The value of 2y is?
A.	x+z
B.	2x-z
C.	x+y
D.	2z-x
Answer» B. 2x-z

Discussion