Question

Susan purchased a prepaid phone card for $25 long-distance calls cost seven cents a minute using this card Susan used her card only wants to make a long distance call if there a meaning credit on her card is $24.23 how many minutes did her call last

Answer 1

Her call lasted for 11 minutes.

Explanation:

Let x represent the total number of minutes that her call lasted.

Susan purchased a prepaid phone card for $25.

Long-distance calls cost seven cents a minute using this card.

Converting 7 cents to dollars, it becomes 7/100 = $0.07

Susan used her card only to make a long distance call. It means that if she made x minutes of long distance call, the cost would be

0.07 × x = $0.07x

if there a remaining credit on her card is $24.23, therefore,

0.07x + 24.23 = 25

0.07x = 25 - 24.23 = 0.77

x = 0.77/0.07

x = 11 minutes