In recent years Wang Company has purchased three machines. Because of frequent employee turnover in the accounting department, a different accountant was in charge of selecting the depreciation method for each machine, and various methods have been used. Information concerning the machines is summarized in the table below.

For the declining-balance method, Wang Company uses the double-declining rate. For the units-of-activity method, total machine hours are expected to be 24,000. Actual hours of use in the first 3 years were: 2009, 400; 2010, 4,500; and 2011, 5,000.

Instructions
(a) Compute the amount of accumulated depreciation on each machine at December 31,
2011.
(b) If machine 2 was purchased on October 1 instead of July 1, what would be the depreciation expense for this machine in 2009? In2010?

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Salvage Useful Life Machine Acquired Cost Value (in years) Depreciation Method 1 Jan. 1, 2008 $96,000 12,000 2 July 1, 2009 85,000 10,000 5 Nov. 1, 2009 66,000 6,000 Straight-line Declining-balance Units-of-activity 3 6