Granite Company uses a job order cost system. The company applies manufacturing overhead to jobs using a predetermined overhead rate based on direct labor hours. Last year, manufacturing overhead and direct labor hours were estimated at $300,000 and 15,000 respectively, for the year. At the end of the year, it was determined that the company actually worked 14,500 direct labor hours for the year, and incurred $286,500 in actual manufacturing overhead costs. Required: a) Determine the predetermined overhead rate for the year. b) Determine the amount of overhead applied to all jobs during the year. c) Determine the amount of under-or over-applied overhead for the year and label the amount as under-or over-applied