Sonic Company reported the following actual costs data for the year: (18 Marks)

Purchase of raw materials (all direct)	$200,000
Direct labour (average hourly rate of $20)	320,000
Manufacturing overhead costs	100,000
Change in inventories:
Increase in raw materials	$20,000
Increase in work in process	16,000
Increase in finished goods	32,000

Sonic Company used a predetermined overhead rate based on direct labour hours. Estimated annual manufacturing overhead cost and direct labour hours were $150,000 and 20,000, respectively. Required: a. What was the pre-determined manufacturing overhead rate? (3 Marks)

b. Calculate the cost of goods manufactured. (5 Marks)

c. What was the cost of goods sold before adjusting for any under or over applied overhead? (3 Marks)

d. By how much was manufacturing overhead cost under or over applied? (4 Marks)

e. Prepare a summary journal entry to close any under or over applied manufacturing overhead cost to cost of goods sold.