Revision of Depreciation A building with a cost of $495,000 has an estimated residual value of $99,000, has an estimated useful life of 18 years, and is depreciated by the straight-line method. a. What is the amount of the annual depreciation? $22,000 V b. What is the book value at the end of the tenth year of use? 220,000 X c. If at the start of the eleventh year it is estimated that the remaining life is 10 years and that the residual value is $25,000, what is the depreciation expense for each of the remaining 10 years? 275,000 X