Respuesta :

Let the increased quantity be x.

Thus, we have:

[tex]\begin{gathered} \frac{x}{64}=\frac{9}{8} \\ \text{cross}-\text{multiply} \\ 8x=576 \\ x=\frac{576}{8} \\ x=72 \end{gathered}[/tex]

Hence, the increased quantity is 72

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