Osborn Manufacturing uses a predetermined overhead rate of $18.90 per direct labor-hour. This predetermined rate was based on a cost formula that estimates $240,030 of total manufacturing overhead for an estimated activity level of 12,700 direct labor-hours.

The company incurred actual total manufacturing overhead costs of $237,000 and 12,200 total direct labor-hours during the period.

Required:
1.	Determine the amount of underapplied or overapplied manufacturing overhead for the period.

2.	Assuming that the entire amount of the underapplied or overapplied overhead is closed out to cost of goods sold, what would be the effect of the underapplied or overapplied overhead on the company's gross margin for the period?

A company assigns overhead cost to completed jobs on the basis of 111% of direct labor cost.The job cost sheet for Job 313 shows that $24,462 in direct materials has been used on the job and that $10,800 in direct labor cost has been incurred. A total of 1,350 units were produced in Job 313.

Required:
a.	What is the total manufacturing cost assigned to Job 313?

b.	What is the unit product cost for Job 313?