Mathematics, 01.02.2021 02:20 alexdub3438
Lucy purchased a prepaid phone card for $30. Long distance calls cost 21 cents a minute using this card. Lucy used her card only once to make a long distance call. If the remaining credit on her card is $27.27, how many minutes did her call last?
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Lucy purchased a prepaid phone card for $30. Long distance calls cost 21 cents a minute using this c...
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