Answer:
$180,000
Explanation:
A sunk cost refers to the cost that is incurred by the businesses but this cost cannot be recovered by the businesses.
Here, given that
Cost of equipment = $600,000
Accumulated depreciation = $420,000
Cost of new machine = $790,000
In this situation, the sunk cost is determined by subtracting the cost that are related to previous year from the cost of the equipment.
Sunk cost = Cost of equipment - Accumulated depreciation
= $600,000 - $420,000
= $180,000