In the Putahe Manufacturing Company, at an activity level of 91,000 machine hours, total overhead costs were $230,770 of this amount, utilities were $42.770 (all variable) and depreciation was $64,000 (all fixed). The balance of the overhead cost consisted of maintenance cost (mixed). At 131,000 machine hours, maintenance costs were $156,000. Assume that all of the activity levels mentioned in this problem are within the relevant range Do not enter dollar signs or commas in the input boxes. Round all answers to 2 decimal places a) The variable cost for maintenance per machine hour is Maintenance cost for 91,000 hours: S Variable cost for maintenance per machine hour: S b) The total fixed overhead cost for Putahe Manufacturing is Depreciation: S Fixed maintenance cost: $ Total foxxed overhead: S c) If 139,000 machine hours of activity are projected for the next period, total expected overhead cost would be Utilities cost $ Maintenance costs (variable): S Total fixed overhead: S Total costs: S