To find out how many fluid ounces are in 9 cups, we can use the equivalent ratio given:
\[ \frac{8 \text{ fluid ounces}}{1 \text{ cup}} = \frac{x \text{ fluid ounces}}{9 \text{ cups}} \]
To find \(x\), we can set up the proportion:
\[ 8 \text{ fluid ounces} \times 9 \text{ cups} = x \text{ fluid ounces} \times 1 \text{ cup} \]
This simplifies to:
\[ 8 \times 9 = x \]
Calculating this gives:
\[ x = 72 \text{ fluid ounces} \]
Thus, there are 72 fluid ounces in 9 cups. Therefore, the correct answer is 72 fluid ounces.
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