Mathematics, 10.11.2020 16:40 july00

Lucy purchased a prepaid phone card for $25 . 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 $16.18 , how many minutes did her call last?

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Lucy purchased a prepaid phone card for $25 . Long distance calls cost 21 cents a minute using this...

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