calculate straight line method , the diminishing method , units of production

On December 27,2018 , Sandhill Windows purchased a piece of equipment for $110,000. The estimated useful life of the equipment is either three years or 50,000 units, with a residual value of $8,000. The company has a December 31 fiscal year end and normally uses straight-line depreciation. Management is considering the merits of using the units-of-production or diminishing-balance method of depreciation instead of the straight-line method. The actual numbers of units produced by the equipment were 12,500 in 2019. 20,000 in 2020 , and 16,500 in 2021. The equipment was sold on January 5,2022 , for $15,000. Calculate the depreciation for the equipment for 2019 to 2021 under 1. the straight-line method 2. the diminishing-balance method, using a 40% rate; and 3. units-of-production (Round depreciable amount per unit to 3 decimal piaces, es. 1.252 and the final answers to 0 decimal places, eg. 1.26 ) (Round depreciable amount per unit to 3 decimal places, e.g. 1.252 and the final answers to 0 decimal places, e.g. 126.) Calculate the gain or loss on the sale of the equipment under each of the three methods. (Enter negative amounts using either a negative sign preceding the number e.g. 45 or parentheses e.g. (45).) Calculate the total depreciation expense plus the loss on sale (or minus the gain on sale) under each ck the three depreciation methods