Mathematics, 16.01.2021 18:00 leximae2186
Christine purchased a prepaid phone card for $25 . Long distance calls cost 21 cents a minute using this card. Christine used her card only once to make a long distance call. If the remaining credit on her card is $17.23 , how many minutes did her call last?
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Christine purchased a prepaid phone card for $25 . Long distance calls cost 21 cents a minute using...
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