Final answer:
The amount of depreciation expense recorded by Aledo for the year ended December 31, 2020, is approximately $16,666.67.
Step-by-step explanation:
In order to calculate the amount of depreciation expense for the year ended December 31, 2020, we need to consider the revised useful life and salvage value of the semi-truck.
Originally, the semi-truck had a useful life of 10 years and an estimated salvage value of $23,000. However, on January 1, 2020, the company decided to extend the useful life to 12 years and decrease the estimated salvage value to $21,000.
To calculate the depreciation expense, we subtract the revised salvage value from the original purchase price and divide it by the revised useful life.
Depreciation expense = (Purchase price - Revised salvage value) / Revised useful life = ($215,000 - $21,000) / 12 = $16,666.67.
Therefore, the amount of depreciation expense recorded by Aledo for the year ended December 31, 2020, is approximately $16,666.67, which is closest to option a. $17,500.