
Answer:
$4,800
Explanation:
For calculating the amount of gain or loss we need to pass the journal entries which are shown below:
Depreciation expense $1,600
     To Accumulated depreciation $1,600
(Being the depreciation expense is recorded)
The computation is shown below:
= 2,400 × 8 months ÷ 12 months
= $1,600
The eight months is calculated from December 31, 2020 to September 1, 2021
The another entry for selling the machine is
Cash  $5,200
Accumulated depreciation $10,000 Â ($8,400 + $1,600)
Loss on sale of machinery $4,800
       To Machinery A/c  $20,000
(being the sale of machinery is recorded)
The loss on sale of machinery is a balancing figure
      Â