SOLUTION: Keisha purchased a prepaid phone card for $20.Long distance calls cost 21 cents a minute using this card. Keisha used her card only once to make a long distance call. If the rema

Question 1099696: Keisha purchased a prepaid phone card for
$20.Long distance calls cost 21 cents a minute using this card. Keisha used her card only once to make a long distance call. If the remaining credit on her card is $17.48,how many minutes did her call last?
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
First find the cost of her one call.

Then find the number of minutes using this cost.

Work that out for the answer in minutes.

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