Depreciation by three methods; partial years

Layton Company purchased tool sharpening equipment on October 1 for $41,850. The equipment was expected to have a useful life of 3 years or 5,400 operating hours, and a residual value of $1,350. 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) the 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

b. Units-of-activity method

c. Double-declining-balance method