Which of the following is a prime cost and a conversion cost?
A) manufacturing overhead
B) direct materials
C) direct labor
D) selling expenses
AAA Metal Bearings produces two sizes of metal bearings (sold by the crate)-standard
and heavy. The standard bearings require $200 of direct materials per unit (per crate),
and the heavy bearings require $245 of direct materials per unit. The operation is
mechanized, and there is no direct labor. Previously AAA used a single plantwide
allocation rate for manufacturing overhead, which was $1.55 per machine hour. Based
on the single rate, gross profit was as follows:
Per unit Standard Heavy
Direct materials cost $200.00 $245.00
Manufacturing overhead cost 124.00 93.00
Total manufacturing cost $324.00 $338.00
Sales price per unit 350.00 370.00
Gross profit per unit $26.00 $32.00
Although the data showed that the heavy bearings were more profitable than the
standard bearings, the plant manager knew that the heavy bearings required much more
processing in the metal fabrication phase than the standard bearings, and that this factor
was not adequately reflected in the single plantwide allocation rate. He suspected that it
was distorting the profit data. He suggested adopting an activity-based costing
approach.
Working together, the engineers and accountants identified the following three
manufacturing activities and broke down the annual overhead costs as shown below:
Activities: Estimated Cost
Metal fabrication $420,000