Tiff Corporation has two production departments, Casting and Assembly. The company uses a job-order costing system and computes a predetermined overhead rate in each production department. The Casting Department's predetermined overhead rate is based on machine-hours and the Assembly Department's predetermined overhead rate is based on direct labor-hours. At the beginning of the current year, the company made the following estimates: had Assembly 10,000 Casting Machine-hours 17,000 1,000 $129,200 1.80 Direct labor-hours Total fixed manufacturing overhead cost Variable manufacturing overhead per machine- 5,000 $46,500 hour Variable manufacturing overhead per direct labor-hour $ 3.80 During the current month the company started and finished Job P131. The following data were recorded for this job: Job P131 Machine-hours Casting Assembly 20 90 20 60 Direct labor-hours ermined overhead rate for the Casting Department is closest to Multiple Choice O 50 40 p $9.40 per machine hour $760 per machine-hour $1.80 per machine-hour $3196 per machine hour