Sandhill Ltd. purchased a delivery truck on May 1, 2021, at a cost of $84,840. The truck is expected to have a residual value of $8,310 at the end of its 4-year useful life. Sandhill has a December 31 year end. Calculate the depreciation expense using the diminishing-balance method for 2021 and 2022. Assume the depreciation rate is equal to one time the straight-line rate. (Round answers to decimal places, eg. 5,275.) Depreciation expense 2021 $ 2022 $ $ Sheridan uses the units-of-production method to calculate depreciation on its taxicabs. Each cab is expected to be driven 336,400 km over its life. Taxi 10 was purchased on March 1, 2020, for $34,170 and is expected to have a residual value of $530. Taxi 10 was driven 113,290 km in 2020 and 98,030 km in 2021. Sheridan has a December 31 year end. Calculate the depreciation expense on Taxi 10 for 2020 and 2021. Year Depreciation expense 2020 $ 2021 $