PSAT Math Multiple-Choice Question 815: Answer and Explanation
Question: 815
A recipe that will yield 6 cupcakes calls for 4 eggs, 3 cups of flour, and 6 cups of sugar. If someone wishes to make 15 cupcakes, how many cups of flour should he or she use?
- A. 6
- B. 7.5
- C. 12.5
- D. 13
Correct Answer: B
Explanation:
(B) Set up a proportion to solve for the unknown number of cups of flour. Use the ratio 6 cupcakes to 3 cups of flour
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