Answer:
Book value at 31 December 2019 = 16000
Step-by-step explanation:
The double declining balance method is an accelerated form of depreciation. Under this method,the asset is depreciated more in the initial years and less in the later years of estimated useful life.
The formula for depreciation expense per year under this method is,
Depreciation expense = 2 * [(Cost - Accumulated depreciation) / estimated useful life]
Depreciation expense 2018 = 2 * [(36000 - 0) / 6]
Depreciation expense 2018 = 12000
Depreciation expense 2019 = 2 * [(36000 - 12000) / 6]
Depreciation expense 2019 = 8000
Book Value = Cost - Accumulated depreciation
Book Value = 36000 - (12000 + 8000)
Book value at 31 December 2019 = 16000