Final answer:
To compute the Assembly process costs, one needs to add the beginning inventory, labor, overhead, and additional direct materials costs, then divide by the units transferred to find the per unit cost. The ending Assembly WIP balance and costs transferred out are based on the level of completion. The exact figures cannot be calculated with the information provided; only the methods have been outlined.
Step-by-step explanation:
To calculate per unit cost for the completed Assembly process (A), direct materials, labor, and overhead costs are combined and divided by the number of units transferred to the Finishing process. We first calculate total labor and overhead costs using the labor hours, wage rate, machine hours, and overhead rate provided. Then, we add beginning inventory and incurred direct material costs.
The ending Assembly work in process balance (B) is the costs attributed to the units that have not been fully processed. This is calculated by considering the degree of completion with respect to direct materials and conversion costs for the remaining units in the Assembly process.
The costs transferred to the Finishing work in process account (C) encompass all costs associated with the units that have been completed in the Assembly process and are now moving on to the Finishing process.
Please note that without the specific value for total labor and overhead costs as well as the beginning work in process inventory split between direct materials and conversion costs (not provided in the question), we cannot compute the exact dollar amount. This explanation provides the methodology to be applied once all necessary figures are available.