Depreciation by Three Methods; Partial Years Perdue Company purchased equipment on April 1 for $73,980. The equipment was expected to have a useful life of three years, or 7,560 operating hours, and a residual value of $2,160. The equipment was used for 1,400 hours during Year 1, 2,600 hours in Year 2, 2,300 hours in Year 3, and 1,260 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-output 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 17,955 Year 2 23,940 Year 3 23,940 Year 4 5,985 b. Units-of-output method Year Amount Year 1 13,300 Year 2 24,700 Year 3 21,850 Year 4 11,970 c. Double-declining-balance method Year Amount Year 1 49,320 X Year 2 16,440 X Year 3 $ 5,480 X Year 4 580 X