Answer:
Depreciation expense on third year is $2,400
Explanation:
First, we must compute the depreciation expense for the first 2 years.
($18,000 - 2,000)/5years = $3,200 depreciation expense per year.
Second, let’s compute the net book value before the adjustment.
$3,200 x 2 years = $6,400 (total depreciation for 2 years)
$18,000 - $6,400 = $11,600 (Net book value before adjustment)
Finally we can now compute the Depreciation expense on the third year.
($11,600 - $2,000) / 3+1
$9,600/4 = $2,400 (new depreciation expense on third year)