Computing Deprecation Under Straight-Line and Double-Declining-Balance for Partial Years

A machine costing $145,800 is purchased on May 1, 2019. The machine is expected to be obsolete after three years (36 months) and, thereafter, no longer useful to the company. The estimated salvage value is $5,400. Compute depreciation expense for both 2019 and 2020 under each of the following depreciation methods:

a. Straight-line

b. Double-declining-balance