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OpenStudy (anonymous):
Nicole purchased a prepaid phone card for $20 . Long distance calls cost 16 cents a minute using this card. Nicole used her card only once to make a long distance call. If the remaining credit on her card is $13.92 , how many minutes did her call last?
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OpenStudy (anonymous):
the same approach: x= minutes x*0.16=20-13.92 solve it
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