Question

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?

Answer 1

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