Answer:
the depreciation expense for 2017 is $18,375
Explanation:
The computation of the depreciation expense for 2017 is shown below:
= (Truck cost - salvage value) ÷ useful life in miles × driven miles in year 2017
= ($109,200 - $4,200) ÷ 120,000 miles × 21,000 miles
= $18,375
Hence, the depreciation expense for 2017 is $18,375
Therefore the above formula should be applied for the same