Answer:
The plantwide overhead rate is $87 per Machine hour.
Step-by-step explanation:
Overheads rate or the overhead absorption rate (OAR) is the rate at which the indirect costs or overheads are assigned to different products. The OAR is calculated by dividing the budgeted overheads by the budgeted activity base. For example, in this case the budgeted overheads is the factory overhead costs and the budgeted activity base is the machine hours.
Overhead absorption rate = Budgeted Overheads / Budgeted activity base
Overhead Absorption rate = 574200 / 6600 = $87 per Machine hour