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Ann purchased a prepaid phone card for $25 . Long distance calls cost 19 cents a minute using this card. Ann used her card only once to make a long distance call. If the remaining credit on her card is
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Ann purchased a prepaid phone card for $25 . Long distance calls cost 19 cents a minute using this card. Ann used her card only once to make a long distance call. If the remaining credit on her card is $21.77 , how many minutes did her call last?

User Linpei
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the answer is 17 minutes because if you subtract 25.00 - 21.77 you get 3.23 and if you divide that by 19 you get 17 minutes
User Zeni
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