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Aniya's cell phone plan costs $50 a month for 500 minutes. She is charged an additional $0.75 for each minute over 500 she uses. Aniya's

Aniya's cell phone plan costs $50 a month for 500 minutes. She is charged an additional $0.75 for each minute over 500 she uses. Aniya's bill last month was $211.25. How many minutes over 500 did Aniya use last month?

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