METER READINGS CURRENT CHARGES Meter Num/She 30002401/6/8"x3/4 Current Rending (07/17/2010) 560.13 Water Service: Previoun Reading (ih15/2018) 547.09 Water Uee CCF 2018 Wale Ued Chaips D14n X 13.04 CCF 40,05 14.38 $55.93 1.04 (MDC Water rate is 0.0042 Cents pur US-Gailan) 2019 Watee Customar Srvc Charme Sub Total: Sewer Service: 2018 Smer Custonet Srvc Charge 3.00 $3.00 Sub Total: Federal / Stato Reguiatory Compliance Fees 49.55 0.33 $49.88 2018 DPH Drinking Water Fee Sub Total: TOTAL CURRENT CHARGES $108.81

Joe received this water bill from the MDC for the period June 15 to July 17, 2018.

A. What amount (in dollars) of the total charges of $108.81 represents variable costs?

B. What amount (in dollars) of the total charges of $108.81 represents fixed costs?