Exercise 10-10 Chubbs Inc.'s manufacturing overhead budget for the first quarter of 2017 contained the following data Indirect materials $11,200 Supervisory salaries Indirect labor Utilities $35,400 7,200 7,200 4,400 10,600 Depreciation Property taxes and insurance 8,000 5,700 Maintenance Actual variable costs were Indirect materials $15,400, indirect labor $9,600, utilities $9,100, and maintenance $5,400. Actual fixed costs equaled budgeted costs except for property taxes and insurance which were $8,700. The actual activity level equaied the budgeted level. Ali costs are considered controllable by the production cepartment manager except for depreciation, and property taxes and insurance