Hi there!
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I believe your answer is:
$1.50
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Here’s why:
Assuming that the cake has one slice per person (16 slices):
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![\frac{\text{price}}{\text{slice}}\\\\\rightarrow (24)/(16)\\\\\rightarrow \boxed{1.50}](https://img.qammunity.org/2022/formulas/mathematics/college/il27rrjycgbgivq8wbrnyp16bvqz26p5pk.png)
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Each slice should cost $1.50.
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Hope this helps you. I apologize if it’s incorrect.