Harrison Company purchased a piece of machinery for $100,000 on 1 July 2017. The residual value is $20,000 and the expected useful life is 8 years. Compute the depreciation expense and net book value of the machinery for the years 2017, 2018, and 2019 using: (i) Straight-line method. (ii) Double declining balance method.

(b) Harrison Company purchased a piece of machinery for $100,000 on 1 July 2017. The residual value is $20,000 and the expected useful life is 8 years. Compute the depreciation expense and net book value of the machinery for the years 2017, 2018 and 2019 using: Straight line method. (11) Double declining balance method. 12