Laila purchased a prepaid phone card for $25 . Long distance calls cost 24 cents a minute using this card. Laila used her card only once to make a long distance call. If the remaining credit on her card is $13.72 , how many minutes did her call last?

The call lasted for 47 minutes.

Step-by-step explanation:

It is given that:

Value of prepaid card = $25

Cost per minute of long distance call = 24 cents = $0.24

Remaining credit = $13.72

Let,

x be the number of minutes

y be the remaining amount

y = 25 - 0.24x

13.72 = 25 - 0.24x

0.24x = 25 - 13.72

0.24x = 11.28

Dividing both sides by 0.24

Therefore,

The call lasted for 47 minutes.

7. d. 64

8. i. 32

9. c. 125

10. j. none of the above

11. d. 81

12. i. 216

13. e. none of the above

14. g. 240

15. e. none of the above

16. g. 32

17.   e. none of the above