could I get help, I changed the first row I thinks its right but I can't figure out the number for useful life.

On January 1, 2018, Quick Delivery Service purchased a truck at a cost of $80,000. Before placing the truck in service, Quick spent $3,000 painting it, $600 replacing tires, and $8,400 overhauling the engine. The truck should remain in service for five years and have a residual value of $8,000. The truck's annual mileage is expected to be 30,000 miles in each of the first four years and 20,000 miles in the fifth year140,000 miles in total. In deciding which depreciation method to use, Carl Thomas, the general manager, requests a depreciation schedule for each of the depreciation methods (straight-line, units-of-production, and double-declining-balance). Read the requirements. Asset Depreciable Useful Accumulated Book Depreciation Expense Date Cost Cost Life Depreciation Value 1-1-2018 $ 92,000 $ 92,000 12-31-2018 $ 84,000 + $ 16,800 $ 16,800 75,200 5 years 5 years 12-31-2019 84,000 + 16,800 33,600 58,400 12-31-2020 84,000 + 5 years = 16,800 50,400 41,600 12-31-2021 84,000 + = 16,800 67,200 24,800 5 years 5 years 12-31-2022 84,000 + = 16,800 84,000 8,000 Before completing the units-of-production depreciation schedule, calculate the depreciation expense per unit. Select the formula, then enter the amounts and calculate the depreciation expense per unit. (Round depreciation expense per unit to two decimal places.) Cost Residual value ) + Useful life in units = Depreciation per unit 16,800 $ 92,000 8,000 ) + 5 = Help me solve this Demodocs example Get more help Clear all Check