13 Book value part 1,2,3

Required: A machine that cost $680,000 has an estimated residual value of $40,000 and an estimated useful life of eight years. The company uses straight-line depreciation. Calculate its book value at the end of year 7 . (Do not round intermediate calculations.) A machine that cost $289,000 has an estimated residual value of $17,000 and an estimated useful life of 17,000 machine hours. The company uses units-of-production depreciation and ran the machine 3,000 hours in year 1,5,000 hours in year 2 , and 6,000 hours in year 3. Required: Calculate its book value at the end of year 3 . (Do not round intermediote colculations.) A machine that cost $110,000 has an estimated residual value of $11,000 and an estimated useful life of four years, The company uses double-declining-balance depreciation. Required: Calculate its book value at the end of year 3. (Do not round intermediate calculations.)