What is the average (arithmetic mean) of $$x, y,$$ and $$z?$$

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What is the average (arithmetic mean) of $$x, y,$$ and $$z?$$

by Gmat_mission » Fri Jan 28, 2022 8:41 am

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What is the average (arithmetic mean) of $$x, y,$$ and $$z?$$

(1) $$x + y = 5$$

(2) $$y + z = 7$$