If 1/x+1/y=1/z and xy=z, what is the average of x and y?

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If 1/x+1/y=1/z and xy=z, what is the average of x and y?

E

Editor

Sep 18, 2022

If 1/x+1/y=1/z and xy=z, what is the average of x and y?

Difficulty: Easy

A:

1/2

B:

1

C:

\frac{x+y+z}{3}

D:

\frac{x+y+z}{2}

ID: 63273db5ca83163ac3a0a059