Answer :
Answer:
Rachel was on the long distance call for 26 minutes
Step-by-step explanation:
First we have to find the total amount that she spent so we subtract, 15-9.54=5.46
then we divide that by .21 to find the number of minutes that she spent on the call. 5.46/.21=26
Answer: her call lasted for 26 minutes.
Step-by-step explanation:
Let x represent the number of minutes that her call lasted.
Rachel purchases a prepaid phone card for $15. Long distant calls cost $.21 a minute using this card. This means that the total cost of x minutes of long distant calls would be 0.21 × x = 0.21x
If the remaining credit on your card is $9.54, it means that
0.21x + 9.54 = 15
0.21x = 15 - 9.54
0.21x = 5.46
x = 5.46/0.21
x = 26 minutes