Amanda purchased a prepaid phone card for $15 . Long distance calls cost 14 cents a minute using this card. Amanda used her card only once to make a long dis

Question

Amanda purchased a prepaid phone card for
$15
. Long distance calls cost
14
cents a minute using this card. Amanda used her card only once to make a long distance call. If the remaining credit on her card is
$12.62
, how many minutes did her call last?

Answer 1

$15 minus $0.14(# minutes) = $12.62

 

15 - .14m = 12.62

 

.14m = 15 - 12.62

 

.14m = 2.38

 

m = 2.38/.14

 

m = 17 minutes