Mathematics
Mathematics, 01.12.2020 22:50, dajmoneyp80a0o

Karen purchased a prepaid phone card for $15. Long-distance calls cost 19 cents a minute using this card. Karen used her card only once to make a long-distance call. If the remaining credit on her card is $12.91, how many minutes did her call last?

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Karen purchased a prepaid phone card for $15. Long-distance calls cost 19 cents a minute using this...

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