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 33,000 desk lamps produced annually follows.

Direct materials	$	280,000
Direct labor
Fabricating department (7,000 DLH $29 per DLH)	$	203,000
Assembly department (15,600 DLH $21 per DLH)	$	327,600
Machine hours
Fabricating department		15,200	MH
Assembly department		20,800	MH

Expected overhead cost and related data for the two production departments follow.

	Fabricating			Assembly
Direct labor hours		110,000	DLH		265,000	DLH
Machine hours		168,000	MH		124,000	MH
Overhead cost	$	400,000		$	415,000

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 rate. 3. Compute departmental overhead rates based on machine hours in the fabricating department and direct labor hours in the assembly department. 4. Use departmental overhead rates from requirement 3 to determine the total manufacturing cost per unit for the aluminum desk lamps.