Cirrus Ltd. purchased a new machine on April 4, 2011, at a cost of $172,000. The company estimated that the machine would have a residual value of $16,000. The machine is expected to be used for 10,000 working hours during its four-year life. Actual machine usage was 500 hours in 2011; 2,800 hours in 2012; 2,900 hours in 2013; 2,600 hours in 2014; and 1,200 hours in 2015. Cirrus Ltd. has a December 31 year end.

Instructions

(a) Calculate depreciation for the machine under each of the following methods:

(1) Straight-line,

(2) Diminishing-balance using double the straight-line rate,

(3) Units-of-production.

(b) Which method results in the highest depreciation expense over the life of the asset?

(c) Which method results in the highest cash flow over the life of the asset?