rita purchased a prepaid phone card for
$30
. Long distance calls cost
14
cents a minute using this card. Rita used her card only once to make a long distance call. If the remaining credit on her card is
$23.70
, how many minutes did her call last
23.70=30-.14*Time
To find the number of minutes Rita's call lasted, we need to determine how much credit was used during the call.
We know that the initial credit on Rita's card was $30 and the remaining credit is $23.70. To find the amount spent on the call, we subtract the remaining credit from the initial credit:
$30 - $23.70 = $6.30
Now, we need to figure out how many minutes Rita could talk for with $6.30 at a rate of 14 cents per minute.
To find the number of minutes, we divide the amount spent on the call by the cost per minute:
$6.30 / $0.14 = 45 minutes
Therefore, Rita's call lasted 45 minutes.