Reference: 03-04 In the O'Donnell Manufacturing Company, at an activity level of 80.000 machine hours, total overhead costs were $223,000 of this amount, slities were 548,000 fall variable and amortization was $60,000 fixed). The balance of the overhead costs consisted of maintenance cost mixed). At 100,000 machine hours, maintenance costs were $130,000 Assume that all of the activity levels mentioned in this problem are within the relevant range What is the variable cost for maintenance per machine hour? $0.75 51.44 $1.30. $1.35