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Maria bought several post stamps and paid one dollar. There are stamps costing five cents, two cents, and one cent in the post office.

Maria bought several post stamps and paid one dollar. There are stamps costing five cents, two cents, and one cent in the post office. She bought 10 times as many one-cent stamps as two-cent stamps, while the rest of the stamps she bought were five-cent stamps. How many one-cent stamps did Maria buy?

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