Question

Nicole purchased a prepaid phone card for $15 . Long distance calls cost 7 cents a minute using this card. Nicole used her card only once to make a long distance call. If the remaining credit on her card is $13.95 , how many minutes did her call last?

Answer 1

her last call is of 15 minutes.

for 7 cents > 1 minute
then for 105 cents > x minutes

so, x minutes= 105÷7
therefore x=15 minutes.

Answer 2

she lost 1.05$, hence if she lost 7cents per minute , she the time she talked is 105(cents) divided by 7 and the answer would be 15