Answer:
$33,840
Step-by-step explanation:
The computation of the depreciation per units or tons under the units-of-production method is shown below:
= (Original cost - residual value) ÷ (estimated tons)
= ($158,400 - $0) ÷ (22,000 tons)
= ($158,400) ÷ (22,000 tons)
= $7.20 per tons
Now for the year 2021, it would be
= Tons during 2021 × depreciation per tons
= 4,700 × $7.20 per tons
= $33,840