A patent was acquired by Oriole Corporation on January 1, 2017, at a cost of $77,600. The useful life of the patent was estimated to be 10 years. At the beginning of 2020, Oriole spent $14,280 in successfully defending an infringement of the patent. At the beginning of 2021, Oriole purchased a patent for $25,410 that was expected to prolong the life of its original patent for 5 additional years.

(a)

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Calculate the amortization expense for 2017.

Amortization Expense

$

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(b)

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Calculate the balance in the Patent account at the beginning of 2020, immediately after the infringement suit.

Balance in the Patent account

$

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(c)

Calculate the amortization expense for 2020.

Amortization expense