High-Low and Cost Formula Harrison Company has accumulated the following total manufacturing overhead costs for two levels of activity (within the relevant range): Low High Activity (direct labor hours) 80,000 120,000 Total manufacturing overhead $468,000 $604,000 The total overhead cost includes variable, fixed, and mixed costs. At 120,000 direct labor hours, the total cost breakdown is as follows: Variable cost $264,000 Fixed cost 160,000 Semi-mixed cost $180,000 a. Using the high-low method of cost analysis, determine the variable portion of the semi-variable cost per Determine the total fixed cost component of the mixed cost. Isolate mixed costs: Low High Total cost 0,00020,000 x 120,000 X Less: Variable cost 264,000 Fixed cost 160,000 160,000 Total mixed cost 32000180.000