cost flows and overhead application Cleveland Metals uses a job cost system and applies factory overhead to production at a predetermined rate of 180% of direct labor cost. Data pertaining to recent operations follow: job number 636 was the only job in progress on January 1st of the current year. The work-in-progress amount contained $24,600 balance on this date. job number 637, 638 and 639 were started during January. the direct material requisitions and direct labor incurred during January amounted to $89,200 and $114,500 respectively. The only job that remained in process on January 31 was job No. 638, with the costs of $15,000 for direct materials and $20,000 for direct labor. a. compute the total cost of the work-in-progress inventory on January 31. b. complete the cost of jobs completed during January and present the proper journal entry to reflect job completion.