Question

Martina purchased a prepaid phone card for $ 15 . Long distance calls cost 22 cents a minute using this card. Martina used her card only once to make a long distance call. If the remaining credit on her card is $ 7.74 , how many minutes did her call last? minutes

Answer 1

33 minutes.

Explanation:

We have been given that Martina purchased a prepaid phone card for $15 . Long distance calls cost 22 cents a minute using this card. Martina used her card only once to make a long distance call and the remaining credit on her card is $7.74.

Let us find the amount spent on the long spent call by subtracting $7.74 from $15.

`\text{Amount spent on long distance call}=\$15-\$7.74`

`\text{Amount spent on long distance call}=\$7.26`

Therefore, Martina spent $7.26 on long distance call.

As each minute of long distance call costs 22 cents ($0.22), so to find the number of minutes of Martina's call we will divide 7.26 by 0.22.

`\text{The number of minutes of Martina's long distance call}=(\$7.26)/(\$0.22)`

`\text{The number of minutes of Martina's long distance call}=33`

Therefore, Martina's long distance call last for 33 minutes.