Answer: please see answers in explanation column
Explanation:
a) Under straight-line method,
Depreciation expense =(Cost - residual value) ÷ No of years =
= ($110,000 - $15,000) ÷ 6 years = $15,833 which refers to the yearly depreciation expense.
Therefore, the yearly depreciation expense of $15,833 will be applied to the Years 2019, 2020 and 2021.
Total depreciation for all the three years equals
$15,833 x 3 years = $47,499.
(b) The double-declining method
which is 2 x Straight - Line Depreciation Percentage x Book value
Straight - Line Depreciation Percentage
100% ÷ 6 years = 16.67%,
Therefore, Year 2019= 2 x 16.67% x $110,000 = $36,663
Year 2020=2 x 16.67% x $73,337 ($110,000 - $36,663) = $24,443
Year 2021=2 x 16.67% x $48,894 ($73,337 - $24,443) = $16,296
The total of the three years ie 2019 to 2021 =$77,402
(c) Given that in 2021 which is after 2 years, the revised estimated useful life becomes 7 years and the residual value is $10,000
Depreciation Using the straight-line method becomes
Depreciation expense =(Cost - residual value) ÷ No of years
But Net Book Value, which is the cost at the end of 2019
$110,000 - $15,833 x 2 years = $78,334
Therefore, Depreciation expense= ($78,334 - $10,000) ÷ 7 years = $9,762
Also,
Using double-declining method,
Straight - Line Depreciation Percentage = 100% ÷ 7 years = 14.29%,
Year 2021,
2 x 14.29% x $48,894 ($73,337 - $24,443) = $13,969
