Answer:
$6.40
Explanation:
In this case, the predetermined overhead rate is calculated by dividing total manufacturing overhead expense by the total number of direct labor hours. The overhead expense is divided in two: fixed and variable. Predetermined variable overhead expense is $2.80 and predetermined fixed overhead expense = $36,000 / 10,000 direct labor hours = $3.60.
So the total predetermined overhead rate = $2.80 + $3.60 = $6.40