A company uses a job order cost system with manufacturing overhead applied to products on the basis of direct labor hours. For the year, estimated total manufacturing overhead cost was $361,200 and total direct labor hours were estimated to be 51,600 . During the year, actual manufacturing overhead incurred was $376,090 and 52,600 direct labor hours were used. Required: a. Calculate the predetermined overhead rate. b. Calculate how much manufacturing overhead will be applied to production. c. Is overhead over- or underapplied? By how much? d. What account should be adjusted for over- or underapplied overhead? Should the balance be increased or decreased