A job cost sheet of Sheffield Company is given here. Job Cost Sheet JOB NO. 462 Quantity 2.500 ITEM White Lion Cages Date Requested 7/2 FOR Todd Company Date Completed 7/31 Direct Materials Date Direct Labor Manufacturing Overhead 7/10 $ 700 12 900 15 $ 500 $625 22 300 375 24 1,700 27 1,500 31 500 625 Cost of completed job: Direct materials Direct labor Manufacturing overhead Total cost Unit cost Answer the following questions. (a) What are the source documents for direct materials, direct labor, and manufacturing overhead costs assigned to this job? Source Documents Direct materials Direct labor Manufacturing overhead (b) What is the predetermined manufacturing overhead rate? (Round answer to 0 decimal places, eg 135.) (b) What is the predetermined manufacturing overhead rate? (Round answer to O decimal places, eg 135.) Predetermined manufacturing overhead rate % (c) What are the total cost and the unit cost of the completed job? (Round unit cost to 2 decimal places, eg. 1.25.) Total cost of the completed job $ Unit cost of the completed job