Problem 9-9A (Part Level Submission) Grouper Corporation purchased machinery on January 1, 2017, at a cost of $310,000. The estimated useful life of the machinery is 4 years, with an estimated salvage value at the end of that period of $34,000. The company is considering different depreciation methods that could be used for financial reporting purposes. ? (a) Prepare separate depreciation schedules for the machinery using the straight-line method, and the declining-balance method using double the straight-line rate. STRAIGHT-LINE DEPRECIATION Computation End of Year Depreciation Rate Years Depreciable Cost x 2017 2018 2019 2020 Annual Depreciation Expense Accumulated Depreciation Book Value DOUBLE-DECLINING-BALANCE DEPRECIATION Computation End of Year Depreciation Rate Years Book Value Beginning of Year x Annual Depreciation Expense Accumulated Depreciation Book Value 2017 2018 2019 2020 4,750 Depreciation expense for 2020 under Double declining-balance is adjusted so that ending book value is equal to salvage value