Laval produces lamps and home lighting fixtures. Its most popular product is a brushed aluminum desk lamp. This lamp is made from components shaped in the fabricating department and assembled in the assembly department. Information related to the 25,000 desk lamps produced annually follows. $265,000 Direct materials Direct labor Fabricating department (8,508 DLM $24 per DLH) Assembly department (15,408 DLM X $26 per DLH) Machine hours Fabricating department Assembly department $204,000 5400,400 14,300 MH 20,100 MH Expected overhead cost and related data for the two production departments follow Fabricating Assembly Direct labor hours 150,000 DLR 360,000 DLR Machine hours 169,000 MH 127.000 MH Overhead cost $390,000 5435,000 es Required 1. Determine the plantwide overhead rate for Laval using direct labor hours as a base 2. Determine the total manufacturing cost per unit for the aluminum desk lamp using the plantwide overhead rote a. Compute departmental overhead rates based on machine hours in the fabricating department and direct labor hours in the assembly department 4. Une departmental overhead rates from requirement 3 to determine the total manufacturing cost per unit for the aluminum desk lamps