Answer:
$90
Step-by-step explanation:
Calculation for what the billable or charge back hour to this department would be
First step is to multiply overhead percentage by the employee earning per hour
125%×$40/hour
=$50
Now let calculate for the billable or charge back hour to the department
Billable or charge back hour=$50+$40/hour
Billable or charge back hour=$90
Therefore A billable or charge back hour to this department would be: $90