Question

Kala purchased a prepaid phone card for S15. Long distance calls cost 24 cents a minute using this card. Kala used her card only once to make a long

distance call. If the remaining credit on her card is $5.64, how many minutes did her call last?

Answer 1

`15 - x = 5.64`

`15 - 5.64 = x`

`9.36 = x`

//

`9.36 / 0.24 = 39`

her call lasted 39 minutes.