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AMC 12 2012b Problem 3

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For a science project, Sammy observed a chipmunk and squirrel stashing acorns in holes. The chipmunk hid 3 acorns in each of the holes it dug. The squirrel hid 4 acorns in each of the holes it dug. They each hid the same number of acorns, although the squirrel needed 4 fewer holes. How many acorns did the chipmunk hide?

\textbf{(A)}\ 30 \textbf{(B)}\ 36 \textbf{(C)}\ 42 \textbf{(D)}\ 48 \textbf{(E)}\ 54

Dataset text AMC 12 2000 to 2025. Quoted with source.

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D

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