Answer and Explanation:
The computation is shown below:
A. The net book value is
Before that the depreciation expense is
Depreciation per year is
= (Purchase Cost - Residual value) ÷ (Useful life)
= ($46,400 - $5,000) ÷ (6)
= $6,900
Now
A. The Netbook value as on disposal date is
= $46,400 - ($6,900 × 4 years)
= $18,800
B. The gain or loss on the sale of the van is
1. The equivalent amount i.e. gain is $18,800
2. The gain is
= $22,500 - $18,800
= $3,700
3. The loss is
= $18,500 - $18,800
= -$300