David Ltd commences operations on 1 July 2018 On the same date, it purchases a machine at a cost of $100000 Residual value $10000 Useful of the machinery is 5 years. David Ltd sold the Machinery on 30 June 2020 at sale price of $40000 Required: a) Prepare depreciation Schedule using double declining balance depreciation method. b). Prepare Journal entry on disposal of machinery (calculate acc. depreciation using double declining balance depreciation method)