On July 1, 2020 Bonita's Greenhouse purchased a new delivery truck for $50,000, Bonita estimates that the delivery truck will have a five-year useful life, or 150,000 kilometres, and a residual value of $5,000. Bonita's Greenhouse has a December 31 year end. Bonita drove the truck 10.000 km in 2020 and 30,000 km in 2021. Calculate depreciation expense using the straight-line method for 2020 and 2021. 2020 2021 Depreciation Expense $ $ e Textbook and Media Calculate depreciation expens using the double-diminishing balance method for 2020 and 2021 2020 2021 Depreciation Expense $ $ Calculate depreciation expense using the units-of-production method for 2020 and 2021. (Round depreciable amount per unit to 2 decimal places, eg. 5.27 and the final answers to decimal places, eg. 5,275.) 2021 2020 $ Depreciation Expense $ e Textbook and Media