Answer:
$91,000
Step-by-step explanation:
Given,
Acquisition cost = $910,000
Salvage value = $0
Useful life = 6 years
Depreciation expense under Straight line method = (Cost - Salvage value) ÷ Useful life
Therefore, Depreciation expense for 2016 = $910,000 ÷ 6 years = $151,667
Depreciation expense for 2017 = $151,667 and for 2018 = $151,667
Therefore, book value after three years = $910,000 - ($151,667 × 3) = $455,000
The new decision made the useful life of the machine to 8 years. Remaining useful life = (8 - 3) = 5 years
Therefore, depreciation expense for 2019 = $455,000 ÷ 5 years = $91,000