SOLUTION: Heather purchased a prepaid phone card for . Long distance calls cost cents a minute using this card. Heather used her card only once to make a long distance call. If the remaini

Question 823134: Heather purchased a prepaid phone card for . Long distance calls cost cents a minute using this card. Heather used her card only once to make a long distance call. If the remaining credit on her card is , how many minutes did her call last?

Answer by CubeyThePenguin(3113) (Show Source): You can put this solution on YOUR website!
No numbers were given, so I will use variables and you can fill in the rest.

prepaid phone card cost = x dollars
calls cost y cents a minute

x - y/100 = amount in dollars remaining after call
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