Answer:
A. Depreciation expense in 20Y5 = $900
Depreciation expense in 20Y6 = $3,600
B. Depreciation expense in 20Y5 = $2800
Depreciation expense in 20Y6 =$7840
Explanation:
Straight line depreciation expense = (Cost of asset - Salvage value) / useful life
($42,000 - $6,000) / 10 = $3,600
The depreciation expense would be $3600 each year except in 20Y5. when the equipment was used from October to December which is 3 months
Depreciation expense in 20Y5 = 3/12 x $3600 = $900
Depreciation expense using the double declining method = Depreciation factor x cost of the asset
Depreciation factor = 2 x (1/useful life) = 2/10 = 0.2
Depreciation expense in 20Y5 = 0.2 x $42,000 = $8,400
But the equipment was only used for 3 months, so we would divide the figure above by 3
$8400 / 3 = $2800
Depreciation expense in 20Y5 = $2800
Depreciation expense in 20Y6 = book value in the beginning of 20Y6 x depreciation expense
Book value = cost of the asset - depreciation expense in 20Y5
$42,000 - $2800 = $39,200
Depreciation expense in 20Y6 = $39,200 x 0.2 = $7840