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Rad Corporation uses a job-order costing system with a single plantwide predetermined overhead rate based on direct labor-hours. The company based its predetermined overhead rate for the current year on the following data: Total direct labor-hours 60,000 $ 420,000 Total fixed manufacturing overhead cost Variable manufacturing overhead per direct labor-hour $ 2.00 Recently, Job PMR1 was completed with the following characteristics: Number of units in the job Total direct labor-hours 60 120 Direct materials $ 630 Direct labor cost $ 2,400 The unit product cost for Job PMR1 is closest to