At the beginning of 2020, Earth Co purchased a machine at a cost of $40,000. Earth Co expects the machine to remain useful for eight years (5,000 machine hours) and to have a residual value of $5,000. Earth Co expects the machine to be used 1,200 hours the first year. Using straight-line depreciation compute the depreciation expense and determine net book value. Depreciation Expense $4,375, net book value $35,625 Depreciation Expense $8,400, net book value $31,600 Depreciation Expense $10,000, net book value $30,000 Depreciation Expense $0, net book value $40,000

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 22,000 desk lamps produced annually follows.direct materials $280,000direct labor fabricating department (8,000 dlh × $24 per dlh) $192,000assembly department (16,600 dlh × $26 per dlh) $431,600machine hours fabricating department $15,200mhassembly department $20,850mhexpected overhead cost and related data for the two production departments follow.fabricating assemblydirect labor hours 150,000dlh 295,000dlhmachine hours 161,000mh 128,000mhoverhead cost $400,000 430,000required1. 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.