Question

Christine purchased a prepaid phone card for $25 . Long distance calls cost 21 cents a minute using this card. Christine used her card only once to make a long distance call. If the remaining credit on her card is $17.23 , how many minutes did her call last?

Answer 1

Answer : 37 minutes

Explanation:

Subtract 25 and 17.23 then divide by 0.21

25-17.23=7.77 divide by 0.21 (21 divided by 100) =37