To find out how many cups of chocolate chips are needed for 28 servings, you can set up a proportion based on the original recipe.
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Start with the ratio of chocolate chips to servings: \[ \frac{1/4 \text{ cup}}{3 \text{ servings}} = x \text{ cups for } 28 \text{ servings} \]
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Set up the equation: \[ x = \frac{1/4 \text{ cup}}{3} \times 28 \]
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Calculate \( \frac{1/4}{3} \): \[ \frac{1/4}{3} = \frac{1}{4} \times \frac{1}{3} = \frac{1}{12} \]
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Now multiply by 28: \[ x = \frac{1}{12} \times 28 = \frac{28}{12} = \frac{7}{3} \]
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Converting \( \frac{7}{3} \) into a mixed number: \[ \frac{7}{3} = 2 \frac{1}{3} \text{ cups} \]
So, you will need 2 and 1/3 cups of chocolate chips for 28 servings.