Ivanhoe A/S purchased a new machine on October 1, 2020, at a cost of 110,000. The company estimated that the machine will have a residual value of 10,000. The machine is expected to be used for 10,000 working hours during its 4-year life. Calculate depreciable cost. (Round answer to 2 decimal places, eg. 12,50.) Depreciable cost per hour e Textbook and Media Compute the depreciation expense under the following methods for the year indicated. (a) Straight-line for 2020. w (b) Units-of-activity for 2020, assuming machine usage was 1,610 hours. (c) Declining-balance using double the straight-line rate for 2020 and 2021. 2020 2021 Straight-line method Units-of-activity method Declining-balance method