Robert Parish Corporation purchased a new machine for its assembly process on January 1, 2014. The cost of this machine was $315,900. The company estimated that the machine would have a salvage value of $15,900 at the end of its service life. Its life is estimated at 4 years, and its working hours are estimated at 40,000 hours. Year-end is December 31.

Instructions

Compute the depreciation expense under the following methods and complete the depreciation schedules below.

(a)	Straight-line depreciation.
(b)	Activity method for 2014 and 2015, assuming that machine usage was 15,000 hours for 2014; 11,710 hours for 2015; 12,150 hours for 2016 and 1,140 hours for 2017.
(c)	Sum-of-the-years'-digits.
(d)	Double-declining-balance.

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