Answer:
4 years
Explanation:
Given;
Purchasing cost of the vehicle = $50,000
Salvage value = $10,000
Depreciation expense = $5,000
Depreciation account at the end of the current year = $20,000
Now,
Annual Depreciation expense using the straight-line method is given as;
= [tex]\frac{\textup{Cost - Salvage value-Depreciation account balance}}{\textup{Useful life}}[/tex]
= [tex]\frac{\textup{50,000- 10,000-20,000}}{\textup{Useful life}}[/tex]
or
Depreciation expense = [tex]\frac{\textup{50,000- 10,000-20,000}}{\textup{Useful life}}[/tex]
also,
Depreciation expense = $5,000
thus,
$5,000 = [tex]\frac{\textup{50,000- 10,000-20,000}}{\textup{Useful life}}[/tex]
or
useful life = [tex]\frac{\textup{50,000- 10,000-20,000}}{\textup{5,000}}[/tex]
or
useful life = 4 years