In double declining method is a form of an accelerated depreciation method in which asset value is depreciated at twice the rate it is done in the straight line method.in this we multiply rate by 2.
Explanation:
we will calculate rate of depreciation by dividing 100% by useful life of an asset
i.e. , [tex]\frac{100}{6}[/tex]=16.66%
now we will multiply by 2 = 16.67% × 2
= 33.34%
now calculation depreciation by multiplying book value at begining with 33.34%
which will give depreciation from 1 January 2018 to 31 December 2018
=33.34%×$36000
=$12000 (approx.)
So book value on December 31 ,2019 will be $24000 ($36000-$12000).