Depreciation by Three Methods; Partial Years Perdue Company purchased equipment on April 1 for $72,360. The equipment was expected to have a useful ife of three years, or 7,020 operating hours, and a residual value of $2,160. The equipment was used for 1,300 hours during Year 1,2,500 hours in Year 2,2,100 hours in Year 3, and 1,120 hours in Year 4. Required: Determine the amount of depreciation expense for the years ended December 31, Year 1, Year 2, Year 3, and Year 4, by (a) the straight-line method, (b) units-of-activity method, and (c) the double-decining-balance method. Note: FOR DECLINING BALANCE ONLY, round the multiplier to four decimal piaces. Then round the ariswer for each year to the nearest whole doliar. a. Straight-line method b. Units-of-activity method c. Double-declining-balance method