Answer:
$112,500
Explanation:
Depreciation expense using the double declining method = Depreciation factor x cost of the asset
Depreciation factor = 2 x (1/useful life)
Depreciation expense in year 1 = 2/4 x $450,000 = $225,000
Book value at the beginning of year 2 = $450,000 - $225,000 = $225,000
Depreciation expense in year 2 = 2/4 x $225,000 = $112,500