Answer:
$15,000
Explanation:
Annual depreciation = (cost price - residual value)/Service life
Where Cost = $90,000
Estimated service life = 5 years
Estimated residual value = $15,000
Annual Depreciation = (90,000 - 15,000) / 5
=75000 / 5
= $15,000
Depreciation expense for the year ended December 31, 2021 = $15,000