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Cullumber Ltd. purchased a new machine on April 4, 2017, at a cost of $184,000. The company estimated that the machine would have a residual value of $16,000. The machine is expected to be used for 10,000 working hours during its four-year life. Actual machine usage was 1,400 hours in 2017; 2,200 hours in 2018;2,400 hours in 2019;2,200 hours in 2020; and 1.800 hours in 2021. Cullumber has a December 31 year end. Calculate depreciation for the machine under each of the following methods: (Round expense per unit to 2 decimal places, es. 2.75 and final answers to 0 decimal places, e. 5,275.) (1) Straight-line for 2017 through to 2021. 2017 expense 2018 expense $ 2019 expense $ 2020 expense $ 2021 expense $ (2) Diminishing-balance using double the straight-line rate for 2017 through to 2021. 2017 expense 2018 expense 2019 expense (3) Units-of-production for 2017 through to 2021. 2017 expense 2018 expense 2019 expense