Answer:
$800,000
Step-by-step explanation:
As per the data given in the question,
Beerbo expects patent's useful life to expire on Dec-31 2023.
At the beginning of 2020 / end of 2019, the value of the patent in Beerbo's book = $1,000,000 - ($1,000,000 ÷ 10×2))
= $800,000
Amortix patent year = 4
Patent amortization expense at the end of 2020 = $800,000 ÷ 4
=$200,000