In: Accounting
Double declining balance is calculated using this formula:
= Net book Value * (2/ Useful life in years)
For the Year ending 2016 total depreciation = $400,000 * (2/10 years)
= $ 80,000
For the year ending 2017 total depreciation = ($400,000 - $80,000) * (2/10 years)
= $ 320,000 * (2/10 years)
= $ 64,000
During the year the Method of depreciation was changed from Double declining balance to straight-line method.
Undepreciated cost as on 01-01-2018 = $400,000- $ 80,000 - $ 64,000
= $ 256,000
Depreciation base amount = $256,000 - $20,000( Residual cost)
= $ 236,000
Value for annual depreciation for Remaining 8 years = $ 236,000
Annual depreciation for the remaining period of 8 years under straight line method = $ 236,000/ 8 years
= $ 29,500.
Answer : Option (b)