Calculating Activity-Based Costing Overhead Rates Assume that manufacturing overhead for Windsor Company consisted of the following activities and costs Setup (1,000 setup hours) Production scheduling (300 batches) Production engineering (70 change orders) Supervision (2,200 direct labor hours) Machine maintenance (13,000 machine hours) 92,000 24,000 70,000 66,000 78,000 330,000 Total activity costs The following additional data were provided for Job 845 Direct material costs Direct labor cost (5 Milling direct labor hours; 25 Finishing direct labor hours) Setup hours Production scheduling Machine hours used (15 Milling machine hours; 5 Finishing machine hours) Production engineering $6,000 1,000 5 hours 1 batch 20 hours 2 change orders