Answer:
Manufacturing overhead spending variance= -110,927.2 favorable
Explanation:
Giving the following information:
The company expected to operate the department at 100% of the normal capacity of 8,400 hours.
Variable costs:
Indirect factory wages $30,240
Power and light 20,160
Indirect materials 16,800
Total variable cost $67,200
Fixed costs:
Supervisory salaries $20,000
Depreciation of plant and equipment 36,200
Insurance and property taxes 15,200
Total fixed cost 71,400
Total factory overhead cost $138,600
During May, the department operated at 8,860 hours, and the factory overhead costs incurred were:
indirect factory wages, $32,400
power and light, $21,000
indirect materials, $18,250
supervisory salaries, $20,000
depreciation of plant and equipment, $36,200
insurance and property taxes, $15,200.
Manufacturing overhead spending variance= (standard rate - actual rate)* actual quantity
Estimated manufacturing overhead rate= total estimated overhead costs for the period/ total amount of allocation base
Estimated manufacturing overhead rate= (67,200 + 138,600)/8400= 24.5 per hour
Actual overhead rate= 106150/8860= 11.98
Manufacturing overhead spending variance= (24.5 - 11.98)*8860= 110,927.2 favorable