Chapter 3 – Product Costing and Cost Accumulation in a Batch Production Environment
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96. Darrin Products uses a job-costing system for its units, which pass from the Machining
Department, to the Assembly Department, to finished-goods inventory. The Machining
Department is heavily automated; in contrast, the Assembly Department performs a number
of manual-assembly activities. The company uses machine hours to apply manufacturing
overhead to products in the Machining Department, and direct labor cost to apply
manufacturing overhead to products in the Assembly Department.
The following information relates to the Machining Department for the year just ended:
Budgeted manufacturing overhead
Actual manufacturing overhead
The Machining Department data that follow pertain to job no. 775, the only job in production
at year-end.
Required:
A. Assuming the use of normal costing, calculate the predetermined overhead rate that is used
in the Machining Department.
B. Compute the cost of the Machining Department’s year-end work-in-process inventory.
C. Determine the amount that overhead was under- or overapplied during the year in the
Machining Department. Indicate whether it is overapplied or underapplied.
D. If Darrin disposes of the Machining Department’s under- or overapplied overhead as an
adjustment to Cost of Goods Sold, would the company’s Cost-of-Goods-Sold account increase
or decrease? Explain.
E. How much overhead would have been charged to the Machining Department’s Work-in–
Process account during the year?
F. Comment on the appropriateness of direct labor cost to apply manufacturing overhead in
the Assembly Department.