Solution :
1. Predetermined overhead rate
Fixed
(253,000 / 22,000) = $ 11.5
Variable
per direct labor-hour = $ 1
Predetermined overhead rate = $12.5
2. Total job cost $
Direct materials 703
Direct labor cost 317
Applied overhead (8 hours x $12.5 per direct labor hour) = 100
Total job cost = $ 1120
3. Charges = $ 1120 x 140%
= $1568