Answer:
a. $1,402,000
Step-by-step explanation:
Equipment purchased during 2021 = Cost of equipment on 12/31/2021 - (Cost of equipment on 12/31/2020 - Cost of equipment sold)
Equipment purchased during 2021 = $5,410,000 - ($4,879,000 - $871,000)
Equipment purchased during 2021 = $5,410,000 - $4,008,000
Equipment purchased during 2021 = $1,402,000