On 2009 January 2, a new machine was acquired for USD 900,000. The M chine has an estimated salvage value of USD 100,000 and an estimated useful life of 10 years. The machine is expected to produce a total of 500,000 units of product throughout its useful life. Compute depreciation for 2009 and 2010 using each of the following methods:
a. Straight line.
b. Units of production (assume 30,000 and 60,000 units were produced in 2009 and 2010, respectively).
c. Double-declining balance.