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 58.000 555.000 The total overhead cast includes variable, fixed, and moved costs, At 120,000 direct labot hours, the total cost breakdown is as follows: Variable cost $330.000 Fixed cost 200.000 Semed cost $225.000 a, Using the high low method of cost analysis, determine the variable portion of the semi-variable cost per direct labor hour. Determine the total fixed cost component of the mixed cost. Isolate mixed costs Do not use negative signs with your answers. LOW Total.com 5 5 Less: Variable com High Fixed cost Total med cost 5 High-Low Analysis High-Low Analysis: Round variable portion per unit to two decimal places, if applicable. Direct Labor Hours Total Mixed Cost Variable Portion - Fixed Portion High Low Difference $ $ Variable portion per units $ b. What should the total planned overhead cost be at 100,000 direct labor hours? Variable Cost Per Unit Fixed Costs Variable cost Fixed cost Mixed: Variable portion Fixed portion Totals: $ Total planned overhead for 100,000 direct labor hours $