In: Accounting
Exercise 4-6 Assigning overhead costs using the plantwide rate and departmental rate methods LO P1, P2
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 | $ | 270,000 | |
Direct labor | |||
Fabricating department (6,000 DLH × $28 per DLH) | $ | 168,000 | |
Assembly department (16,000 DLH × $29 per DLH) | $ | 464,000 | |
Machine hours | |||
Fabricating department | 14,700 | MH | |
Assembly department | 20,300 | MH | |
Expected overhead cost and related data for the two production
departments follow.
Fabricating | Assembly | |||||
Direct labor hours | 190,000 | DLH | 325,000 | DLH | ||
Machine hours | 169,000 | MH | 121,000 | MH | ||
Overhead cost | $ | 330,000 | $ | 405,000 | ||
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.
Particulars | Units | ||||||||||
Total Units | 33,000 | ||||||||||
Particulars | Amt | ||||||||||
Direct Material | 270000 | ||||||||||
Direct Labor: | DLH | MH | |||||||||
F Dept | 168000 | F Dept | 6000 | 14700 | 28.00 | ||||||
A Dept | 464000 | A Dept | 16000 | 20300 | 29.00 | ||||||
Total | 22000 | 35000 | |||||||||
Units | 33000 | 33000 | |||||||||
F Dept | A Dept | Total | PU Hours | 0.67 | 1.06 | ||||||
Overhead Cost | 330000 | 405000 | 735000 | ||||||||
DLH | 190000 | 325000 | 515000 | ||||||||
1 | Plant Wide OH Rate (TotalOH/Total DLH) | 1.43 | |||||||||
2 | Total Manufacturing Cost: | PU | |||||||||
Direct Material | 8.18 | (DM/Units) | |||||||||
Direct Labor: | |||||||||||
Fabrication Dept | 5.09 | (DL F Dep/Units) | |||||||||
Assembly Dept | 14.06 | (DL A Dep/Units) | |||||||||
Overhead Allocated | 0.95 | ||||||||||
(6000+16000)*1.43)/Units | |||||||||||
Total Cost | 28.28 | ||||||||||
3 | Departmentwise OH Rate: | ||||||||||
Department Name | Allocation Base | Overhead | Total Base | Rate per Base | |||||||
Fabrication Dept | MH | 330000 | 169000 | 1.95 | |||||||
Assembly Dept | DLH | 405000 | 325000 | 1.25 | |||||||
4 | Total Manufacturing Cost: | PU | |||||||||
Direct Material | 8.18 | (DM/Units) | |||||||||
Direct Labor: | |||||||||||
Fabrication Dept | 5.09 | (DL F Dep/Units) | |||||||||
Assembly Dept | 14.06 | (DL A Dep/Units) | |||||||||
Overhead Allocated | |||||||||||
Fabrication Dept | 0.87 | (14700*1.95)/Units | |||||||||
Assembly Dept | 0.60 | (16000*1.25)/Units | |||||||||
Total Cost | 28.81 | ||||||||||