SOLUTION: Mai purchased a prepaid phone card for $20.00 . Long distance calls cost 23 cents a minute using this card. Mai used her card only once to make a long distance call. If the remaini

Algebra ->  Average -> SOLUTION: Mai purchased a prepaid phone card for $20.00 . Long distance calls cost 23 cents a minute using this card. Mai used her card only once to make a long distance call. If the remaini      Log On


   

Question 842941: Mai purchased a prepaid phone card for $20.00 . Long distance calls cost 23 cents a minute using this card. Mai used her card only once to make a long distance call. If the remaining credit on her card is $14.71 , how many minutes did her call last?
Answer by TheInstructor(29) About Me  (Show Source):
You can put this solution on YOUR website!
Sup dawg,
20.00 - 14.71 = $5.29

If long distance calls cost .23 cents a minute; then 529cents / 23c = 23 minutes

Hope this helped.