Answer and Explanation:
The computation is shown below:
Years Straight line Units of production
Year 1 ($90,000 - $5,000 ÷ 5) 1,600 × 8.5 = $13,600
= $17,000
Year 2 $17,000 2200 × 8.5 = $18,700
Year 3 $17,000 2400 × 8.5 = $20400
Year 4 $17,000 1,800 × 8.5 = $15,300
Year 5 $17,000 2000 × 8.5 = $17,000
Total $85,000 $85,000
The 8.5 come from
= ($90,000 - $5,000) ÷ (10,000 hours)
= 8.5
hence, the units of production would be most appropriate