If X + Y = 2Z and Z + W = 2X, then:
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. X + Z = Y + W.
X + Y = 2Z
Y = 2Z - X
Z + W = 2X
W = 2X - Z
Add Y and W
Y + W = (2Z - X) + (2X - Z)
Y + W = Z + X
X + Z = Y + W