Answer:
23880.00
Step-by-step explanation:
To determine the avoidable cost, first determine the variable cost (including the variable cost of reciprocal services for the maintenance department). This can be done by setting up the equations for the reciprocal method using only variable costs.
Set up the equations:
Total service department costs = Direct costs of the service department + Cost allocated to the service department
S1 (Maintenance) = $ 9,400 + (1/6) S2
S2 (Personnel) = 16,000 + (1/5) S1
Substituting, the first equation into the second yields,
S2 = $16,000 + (1/5) [$9,400 + (1/6) S2]
S2 = $16,000 + $1,880 + (1/30) S2
The variable cost savings are the first two terms and equal $17,880 (= $16,000 + $1,880). The avoidable cost from outsourcing Personnel is $23,880 (= $6,000 avoidable fixed costs + $17,880 avoidable variable costs).