Computing Depreciation and Accounting for a Change of Estimate In January 2016, Rankine Company paid $8,500,000 for land and a building. An appraisal estimated that the land had a fair value of $2,500,000 and the building was worth $6,000,000. Rankine estimated that the useful life of the building was 30 years, with no residual value. a. Calculate annual depreciation expense using the straight-line method. b. Calculate depreciation for 2016 and 2017 using the double-declining-balance method. c. Assume that in 2018, Rankine changed its estimate of the useful life of the building to 25 years. If the company is using the double-declining-balance method of depreciation, what amount of depreciation expense would Rankine record in 2018?