On April 1, 2014, Ice Drilling Co. purchased a trencher for $125,000. The machine was expected to last five years and has a residual value of $12,500.

Required
Calculate depreciation expense for 2014 and 2015 to the nearest month, using
(a) The straight-line method
(b) The double-declining-balance method. The company has a December 31 year-end.