Mathematics, 25.07.2019 03:00 ineedhelp2285

Martina purchased a prepaid phone card for $20. long distance calls cost 24 cents a minute using this card. martina used her card once to make a long distance call. if the remaining credit on her card is $13.28, how many minutes did her call last?

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Martina purchased a prepaid phone card for $20. long distance calls cost 24 cents a minute using thi...

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