Answer:
$27,400 and $59,600
Step-by-step explanation:
The computation of the depreciation expense and the book value using the sum of-the-years'-digits method is shown below:
Depreciation expense is
= (Purchase cost - residual value) × useful life ÷ sum of years
= ($87,000 - $4,800) × 5 years ÷ (5 + 4 + 3 + 2 + 1)
= $27,400
And, the book value is
= Purchase cost - depreciation expense
= $87,000 - $27,400
= $59,600