Moody corporation uses a job-order costing system with a plantwide predetermined overhead rate based on machine-hours. at the beginning of the year, the company made the following estimates: machine-hours required to support estimated production 152,000 fixed manufacturing overhead cost $ 660,000 variable manufacturing overhead cost per machine-hour $ 4.80 required: 1. compute the plantwide predetermined overhead rate. 2. during the year, job 400 was started and completed. the following information was available with respect to this job: direct materials $ 370 direct labor cost $ 250 machine-hours used 38