PE 10-4B; Double declining-balance depreciation A building acquired at the beginning of the year at a cost of $820,000 has an estimated residual value of $100,000 and an estimated useful life of 50 years, Determine (a) the double-declining-balance rate and (b) the double-declining-balance depreciation for the first year....Professor says in a straight line and double decline 5 years. Show work please and Thank You