Mathematics, 01.12.2020 14:00 kbuhvu

Kala purchased a prepaid phone card for $30. Long distance calls cost 12 cents a minute using this card. Kala used her card only once to make a long distance call. If the remaining credit on her card is $27.12, how many minutes did her call last?

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Kala purchased a prepaid phone card for $30. Long distance calls cost 12 cents a minute using this c...

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