Thad acquires a machine at a cost of $502,000 for use in his business and places it in service on

April 1, 2010. The machine is depreciated under MACRS, with a 7-year recovery period. This machine was his only acquisition of the year. Thad elects to expense $250,000 of the acquisition cost under Sec. 179.

a. What is Thad's total depreciation deduction for the machine in 2010?

b. Thad then sells the machine on October 5, 2012 for $80,000. Compute Thad's depreciation deductions for 2010 through 2012, the adjusted basis of the machine on October 5, 2012, and the gain or loss on the sale.