Final answer:
The predetermined overhead rate cannot be determined with the given information because the total overhead and the basis for applying overhead are not provided; only the Work in Process Inventory balance, direct material cost, and direct labor cost are known.
Step-by-step explanation:
The Work in Process Inventory account of a manufacturing company has a debit balance of $4,400. To determine the company's predetermined overhead rate, we need the direct labor cost from the job still in process, which is $800. However, the information provided does not give us the actual overhead applied or the overhead rate but only the direct material cost of $2,000. Therefore, without additional information on the total overhead or the basis for applying the overhead (such as a percentage applied to the direct labor cost), we cannot calculate the predetermined overhead rate.