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