Answer:
Appropriate patent amortization expense = $10 million
Step-by-step explanation:
As per the data given in the question,
Annual amortization expense = Cost ÷ Time
= $36 ÷ 9
= $4 million
Year 2018 Amortization Expense 4 Years = $4 million × 4
= $16 million
Unamortized cost = $36 million - $16 million
= $20 million
Year 2018 Amortization expense 4 years = $20 million ÷ 2
= $10 million