Answer:
c. $215,000
Explanation:
The computation of the amount charged to income is shown below:
But before that first we have to determine the book value as on Jan 2024 which is
Total patent cost
= $200,000 + $50,000
= $250,000
Amortized cost till year 2024 is
= ($250,000 ÷ 10 years) × 3 years
= $75,000
The three years is counted from 2021 to 2024
Now
Book value on Jan 2024 is
= $250,000 - $75,000
= $175,000
So,
Amount charged to income is
= $175,000 + $40,000
= $215,000