Total machine-hours Total fixed manufacturing overhead cost Variable manufacturing overhead per machine-hour 25,000 $ 252,000 $ 2.10 Recently, Job ABC was completed with the following characteristics: Number of units in the job Total machine-hours Direct materials Direct labor cost 10 30 $ 675 $ 1.050 a The predetermined overhead rate is closest to: $12.18 per machine-hour b.$10.50 per machine-hour $10.08 per machine-hour $2.10 per machine-hour d