Answer:
A) accounting profit = $217,860
B) economic profit = $68,081
Step-by-step explanation:
A) accounting profit per year = total revenue - maintenance costs = $120,000 - $40,000 = $80,000 per year
the present value of the cash flows = $80,000 / 1.05 + $80,000 / 1.05² + $80,000 / 1.05³ = $76,190 + $72,562 + $69,107 = $217,860
B) economic profit per year = accounting profit - implicit costs = $80,000 - $55,000 = $25,000 per year
the present value of the cash flows = $25,000 / 1.05 + $25,000 / 1.05² + $25,000 / 1.05³ = $23,810 + $22,676 + $21,596 = $68,081