1. Compute a predetermined overhead rate for the plant as a whole based on machine hours. per machine hour 2. Compute predetermined overhead rates for each department using machine hours. Round yo Department A & per machine hour Department B : per machine hour 3. Suppose that a machine tool (Product X75 ) used 60 machine hours from Department A and 1 . cost assigned to each product using the plantwide rate computed in Requirement 1. Repeat the computation using the departmental rates found in Requirement 2 . Which of the two approaches gives the fairest assignment? 4. Repeat Requirement 3 assuming the expected overhead cost for Department B is $360,000. Would you recommend departmental rates over a plantwide rate