Modern Lighting Inc. has in the past depreciated its computer hardware using the straight-line method, assuming a 10% salvage value and an expected useful life of five years. As a result of the rapid obsolescence associated with the computer industry, Modern Lighting has determined that it receives most of the benefit from its computer systems in the first few years of ownership. Therefore, as of January 1, 2011, Modern Lighting proposes changing to the sum-of-the-years’-digits method for depreciating its computer hardware. The following information is available regarding all of Modern Lighting’s computer purchases:

Cost

2008 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $45,000

2009 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25,000

2010 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30,000

1. Compute the depreciation taken by Modern Lighting during 2008, 2009, and 2010. Assume that all purchases were made at the beginning of the year.

2. Compute the amount of depreciation expense for 2008–2010, assuming the sum-of-the-years’-digits had been used.

3. Compute the amount of depreciation expense for 2011.