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AMC 12 2020a Problem 1

  • Paper

Carlos took 70%70\% of a whole pie. Maria took one third of the remainder. What portion of the whole pie was left?

\textbf{(A)}\ 10% \textbf{(B)}\ 15% \textbf{(C)}\ 20% \textbf{(D)}\ 30% \textbf{(E)}\ 35%

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

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C

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