Charmaine purchased a prepaid phone card for $15. Long distance calls cost 7 cents a minute using this card. Charmaine used her card only once to make a long distance call. If the remaining credit on her

Charmaine purchased a prepaid phone card for $15. Long distance calls cost 7 cents a minute using this card. Charmaine used her card only once to make a

long distance call. If the remaining credit on her card is $13.88, how many minutes did her call last?

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Charmaine purchased a prepaid phone card for $15. Long distance calls cost 7 cents a minute using this card. Charmaine used her card only once to make a long distance call. If t…

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