Revision of Depreciation A bulding with a cost of $405,000 has an estimated residual value of $162,000, has an estimated useful life of 27 years, and is depreciated by the straight-line method, . What is the amount of the annual depreciation? Do not round intermediate calculations. . What is the book watun at the end of the fifteenth year of use? c. 1 at the start of the sixteenth year it is estimated that the remaining the Is 15 years and that the residuol value is $120,000, what is the depreciation expense for each of the remaining 15 years? )