Sargent Corporation bought equipment on January 1, 2017. The equipment cost $360,000 and had an expected salvage value of $60,000. The life of the equipment was estimated to be 6 years. The depreciable cost of the equipment is Select one: a. $360,000. b. $50,000. C. $200,000. d. $300,000. On January 1, a machine with a useful life of five years and a residual value of $30,000 was purchased for $90,000. What is the depreciation expense for year 2 under the double-declining-balance method of depreciation ? a. b. C. d. Select one: a. $17,280 b. $36,000 c. $21,600 d. $28,800