Answer:
The company should replace the old machine as doing so reduce total costs by $22,000
Sunk cost is the cost already incurred in purchasing the old machine of $600,000
Step-by-step explanation:
By not buying a new machine the company would incur an annual variable production costs of $61,000 per year,which translates into $488,000 for eight years($61000*8).
If the company decides to buy the new machine,it would incur purchase cost of $545,000 and would receive proceeds of $231,000 on the old machine as well as incur $19,000 annual variable costs of production($152,000 for eight years).
total costs of alternative 1=$488,000
total costs of alternative 2=$545,000-$231,000+$152,000=$466000
incremental benefit of new machine=$488,000-$466,000=$22,000