Answer:
$37,000
Step-by-step explanation:
Depreciation expense = Depreciation factor x total machine hour per year
Depreciation factor = (Cost of asset - residual value ) / useful life
($100,000 - $10,000) / 10,000 = $9
Depreciation expense in year 1 = $9 × 1000 = $9000
Deprecation expense in year 2 = $9 × 2000 = $18,000
Deprecation expense in year 3 = $9 x 4000 = $36,000
Total depreciation expense = $36,000 + $18,000 + $9,000 = $63,000
Net book value = $100,000 - $63,000 = $37,000
I hope my answer helps you