Rachel purchases a prepaid phone card for $15. Long distant calls cost $.21 a minute using this card. Rachel used her card only wants to make a long distance call. If the remaining credit on your card is $9.54 how many minutes did her call last?

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

step-by-step explanation:

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