Blossom and Associates, a CPA firm, uses job order costing to capture the costs of its audit jobs. There were no audit jobs in process at the beginning of November. Listed below are data concerning the three audit jobs conducted during November. Direct materials Auditor labor costs Auditor hours Rondelli $720 $4.720 66 Preston $480 $5,280 88 Lopez $240 $2,960 45 Overhead costs are applied to jobs on the basis of auditor hours and the predetermined overhead rate is $40 per auditor hour. The Rondelli job is the only incomplete job at the end of November. Actual overhead for the month was $8,400.