[The following information applies to the questions displayed below] Delph Company uses a job-order costing system and has two manufacturing departments-Molding and Fabrication. The company provided the following estimates at the beginning of the year: Machine-hours Fixed manufacturing overhead costs Variable manufacturing overhead cost per machine-hour Molding 20,000 $ 720,000 $ 4.00 $ Fabrication 35,000 $ 240,000 1.50 Total 55,000 $960,000 During the year, the company had no beginning or ending inventories and it started, completed, and sold only two jobs- Job D-70 and Job C-200. It provided the following information related to those two jobs: Job D-70 Direct materials cost Direct labor cost Machine-hours Molding Fabrication Total $370,000 $ 320,000 $690,000 $ 200,000 $ 180,000 $380,000 14,000 20,000 6,000 Job C-2001 Direct materials cost Direct labor cost Machine-hours Molding Fabrication Total $300,000 $280,000 $580,000 $ 120,000 5 260,000 $380,000 6,000 29,000 35,000 Delph had no underapplied or overapplied manufacturing overhead during the year. Required: 1. Assume Delph uses a plantwide predetermined overhead rate based on machine-hours. a. Compute the plantwide predetermined overhead rate.