Answer: Total factory overhead is 45200.
Explanation: According to cost accounting there are 3 elements of cost:
Direct materials, direct labor and factory overheads. All costs related to production or factory that are not directly incorporated into the product are considered factory overheads.
According to this, we calculate:
Indirect materials = 15200
Factory manager salaries = 7200
Factory supplies = 9000
Indirect labor = 6300
Depreciation - factory equipment = 7500