In the Crane, maintenance costs are a mixed cost. At the low level of activity (40 direct labor hours), maintenance costs are $300. At the high level of activity (100 direct labor hours), maintenance costs are $550. Using the high-low method, what is the variable maintenance cost per unit and the total fixed maintenance cost? Variable Cost Per Unit Total Fixed Cost $4.17 $250 $5.50 $200 $4.17 $133 $5.50 $110