Caro Manufacturing has two production departments, Machining and Assembly, and two service departments, Maintenance and Cafeteria. Direct costs for each department and the proportion of service costs used by the various departments for the month of August follow:
Proportion of Services Used by | |||||||||||
Department | Direct Costs | Maintenance | Cafeteria | Machining | Assembly | ||||||
Machining | $ | 130,000 | |||||||||
Assembly | 76,000 | ||||||||||
Maintenance | 55,000 | — | 0.3 | 0.4 | 0.3 | ||||||
Cafeteria | 37,000 | 0.6 | — | 0.2 | 0.2 | ||||||
Required:
Use the reciprocal method to allocate the service costs. (Matrix algebra is not required.) (Negative amounts should be indicated by a minus sign. Do not round intermediate calculations.)
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Let Y be the cost of Maintenance department and Z be the cost of Cafeteria department.
Y = 55,000 + 0.6Z (equ i)
Z = 37,000 + 0.3Y (equ. ii)
Substituting the value of Z in equ. i
Y = 55,000 + 0.6(37,000 + 0.3Y)
Y = 55,000 + 22,200 + 0.18Y
Y - 0.18Y = 77,200
0.82Y = 77,200
Y = 77,200/0.82
= $94,146
Z = 37,000 + 0.3Y
= 37,000 + 0.3 x 94,146
= 37,000 + 28,244
= $65,244
Cost allocation to | ||||
Maintenance | Cafeteria | Machining | Assembly | |
Service department cost | 55,000 | 37,000 | ||
Maintenance (0.3:0.4:0.3) | (94,146) | 28,244 | 37,658 | 28,244 |
Cafeteria (0.6:0.2:0.2) | 39,146 | (65,244) | 13,049 | 13,049 |
0 | 0 | 50,707 | 41,293 |
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