1 Answer

Leony · Answer 1 · 2018-09-25T01:26:30+0000

x/y = 2 so x = 2y
z/x = 4 so z = 4x but x = 2y so z = 4(2y) = 8y

now you have
x = 2y, z = 8y

x + y + z 2y + y + 8y 11y 11
------------ = -----------------------= ------------- = ----------- = 5 1/2
x 2y 2y 2

answer
C. 5 1/2

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