Answer:
If Caro outsources only the Maintenance department, she should pay not more than $11,000, the avoidable Fixed Costs is incidental to her operations and not that of the outsource partner thus the $5,000 shouldn't be included as a payment due the Outsource Partner.
Caro decision case
Maintenance department total costs:
Variable - $11,000
Avoidable fixed costs - $5,000
Total costs (if not outsourced) = $16,000
Explanation: