Ann purchased a prepaid phone card for 20$. Long-distance calls cost 12 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

Ann purchased a prepaid phone card for 20$. Long-distance calls cost 12 cents a minute using this card. Ann used her card only once to make a long-distance call. If the remaining credit on her card is 16.76$, how many minutes did her call last?

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Ann purchased a prepaid phone card for 20$. Long-distance calls cost 12 cents a minute using this card. Ann used her card only once to make a long-distance call. If the remainin…

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