Depreciation by Three Methods; Partial Years Perdue Company purchased equipment on April 1 for $63,990. The equipment was expected to have a useful life of three years, or 5,400 operating hours, and a residual value of $1,890. The equipment was used for 1,000 hours during Year 1, 1,900 hours in Year 2, 1,600 hours in Year 3, and 900 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- declining-balance method. Note: FOR DECLINING BALANCE ONLY, round the multiplier to four decimal places. Then round the answer for each year to the nearest whole dollar. a. Straight-line method Year Amount Year 1 13,800 X Year 2 20,700 Year 3 20,700 Year 4 6,900 X b. Units-of-activity method Year Year 1 Amount 11,500