AMC8 2012 Problem 1

Rachelle uses 3 pounds of meat to make 8 hamburgers for her family. How many pounds of meat does she need to make 24 hamburgers for a neighborhood picnic?
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Answer Choices
A. 6
B. 6 \dfrac{2}{3}
C. 7 \dfrac{1}{2}
D. 8
E. 9