Mrs. Smith calls customer care after she receives her phone bill. Her bill is normally $40.00 per month, however; this month it is $110.00. Mrs. Smith negotiates a 50% credit of the difference between the normal charge of $40.00 and the current balance of $110.00. How much will Mrs. Smith be responsible for paying?
Mrs. Smith will be responsible for paying $75.00 after negotiating a 50% credit on the $70.00 difference between her normal charge of $40.00 and the current balance of $110.00.