Calculation of amount of direct materials charged to job no. 173:
It is given that the work in process inventory on December 31 consisted of job no. 173 with a balance of $66,200.
Job no. 173 has been charged with manufacturing overhead costs of $20,000. Denver allocates manufacturing overhead costs at a rate of 50% of direct labor cost. It means the direct labor cost would be 20,000/50% = $40,000
Now we can calculate the amount of direct materials charged to job no. 173 as follows:
Direct material Cost = Total Cost allocated to Job – Direct Labor Cost – Manufacturing Overhead Cost
= 66200-40000-20000
= 6200
Hence, the amount of direct materials charged to job no. 173 is $6,200