Answer: $287,000
Step-by-step explanation:
Sunk costs are costs that have already been incurred and so should make no impact on the decision to be made. In the case of fixed assets to be replaced, the Sunk cost would be the Book value of the Asset.
Sunk Cost of Old Machine = Book Value of old machine
Sunk Cost of Old Machine = Cost Price - Accumulated Depreciation
Sunk Cost of Old Machine = 410,000 - 123,000
Sunk Cost of Old Machine = $287,000