Answer:
$5,760
Step-by-step explanation:
depreciable value = cost - salvage value = $84,000 - $12,000 = $72,000
units of activity = 1,000,000 miles
depreciation expense per unit of activity = $72,000 / 1,000,000 miles = $0.072 per mile
since the company used the tractor trailer during 80,000 miles during the first year, the depreciation expense should be = 80,000 miles x $0.072 per mile = $5,760
The journal entry to record the depreciation expense should be
December 31, year 1, depreciation expense of tractor trailer:
Dr Depreciation expense 5,760
Cr Accumulated depreciation - tractor trailer 5,760