On April 1, 2023, Parks Co. purchased machinery at a cost of $42,000. The machinery is expected to last 10 years and to have a residual value of $6,000. Show your computations. Required: A) Compute depreciation expense for 2023 (9 months, 4/1/23 ~ 12/31/23) assuming the sum-of-the-years'-digits method is used.

Answer: ____________

Computations:

B) Compute depreciation for 2023 (4/1/23 ~ 12/31/23), assuming double-declining balance method is used.

Answer: _____________

Computation: