Instruction a: Calculate the depreciation expense for 2020 assuming the asset was purchased on January 1, 2020 and not August 1 for all four methods.

Instruction b: Calculate the depreciation expense for 2020 and 2021 assuming the asset was purchased on August 1, 2020 for the straight line, units of production and double-declining balance methods.

E11.5 (LO 1, 2) (Depreciation Computations-Four Methods) Robert Parish Corporation purchased a new machine for its assembly process on August 1, 2020. The cost of this machine was $117,900. The company estimated that the machine would have a salvage value of $12,900 at the end of its service life. Its life is estimated at 5 years, and its working hours are estimated at 21,000 hours. Year-end is December 31