Question

Lisa purchased a prepaid phone card for $25.long distance calls cost 16 cents a minute using this card.lisa used her card only once to make a long distance call. If the remaining credit on her card is $20.52,how many minutes did her last call last

Answer 1

25-20.52=4.48
4.48/0.16=28 minutes

Answer 2

25 - 20.52 = 4.48
4.48/.16 = 28
her call lasted 28 minutes