If4w+4x=4yand w*x = y, then the average (arithmetic mean) of w and x is
A.1/2
B.1
C.2
D.4
E.8
我的答案：
fff\(If \frac{4}{w}+\frac{4}{x}=\frac{4}{y}\)/fffand w*x = y, then the average (arithmetic mean) of w and x is
(Official1-70可直接使用)
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