Answer:
n=72
Explanation:
To find the value of N, multiply the means and extremes then simplify
64:n=8:9
\begin{gathered}64 \times 9 = n \times 8 \\ \frac{576}{8} = \frac{8n}{8} \\ 72 = n \\ n = 72 \end{gathered}
64×9=n×8
8
576
=
8
8n
72=n
n=72
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