Answer:
Cullumber, Inc.
The amount that Cullumber should charge against income during 2021 is:
= $567,000.
Explanation:
a) Data and Calculations:
Cost of a purchased patent = $810,000
Estimated useful life = 10 years
Annual amortization expense = $81,000
Accumulated amortization for 3 years = $243,000 ($81,000 * 3)
Book value of patent on December 31, 2021 = $567,000 ($810,000 - $243,000)
The remaining book value should be charged against income in 2021 because of the withdrawal of the product.