Direct Direct Dire material wages Machine ($) ($) h hours Department: A 120 100 20 000 40 000 B 60 60 40 000 10 000 10 10 10 000 After adding production overhead to prime cost, one-third is add production cost for gross profit. This assumes that a reasonable earned after deducting administration, selling and distribution c You are required to: (a) calculate the current overhead absorption rate; (1 mark) (b) using the rate obtained in (a) above, calculate the product overhead charged to job no. 657, and state the production and expected gross profit on this job ( 3 marks) (c) (i) comment on the suggestion that departmental overhe absorption rates would result in more accurate job costs; (4 marks)