The amount of annual depreciation by the straight-line method is $18,800.
<h3>Annual depreciation</h3>
a. Annual depreciation
Annual depreciation=[($80,000 - $4,800) ÷ 4]
Annual depreciation=$18,800
b. Annual depreciation
Year 1 Annual depreciation= 10% × $80,000
Year 1 Annual depreciation = $8,000
Year 2 Annual depreciation= 10% × ($75,000 - $7,500)
Year 2 Annual depreciation = $7,520
Therefore the amount of annual depreciation by the straight-line method is $18,800.
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