Concord Company purchases equipment on January 1, Year 1, at a cost of $498,000. The asset is expected to have a service life of 12 years and a salvage value of $44,820.

Required:
a. Compute the amount of depreciation for each of Years 1 through 3 using the straight-line depreciation method.
b. Compute the amount of depreciation for each of Years 1 through 3 using the sum-of-the-years'-digits method.