Precision company estimates its machine-hour requirements for the four quarters to be 35,000 hours, 20,000 hours, 15,000 hours, and 30,000 hours respectively. the variable manufacturing overhead rate is $4 per machine-hour. the fixed manufacturing overhead is $50,000 per quarter, which includes $20,000 of depreciation expense. calculate the variable manufacturing overhead for the year. $400,000 $200,000 $280,000 $260,000