A building acquired at the beginning of the year at a cost of $95,200 has an estimated residual value of $4,800 and an estimated useful life of four years. Determine t following. (a) The double-declining-balance rate 47600 X % (b) The double-declining-balance depreciation for the first year 0.25 X Feedback Check My Work The double-declining rate is two times the straight-line rate. When the double-declining balance method is used, the estimated residual value is not considered.