Answer: The amount of gain on the sale of sculpture is $4100 and its nature is considered as 'ordinary income'.
Step-by-step explanation:
Since we have given that
Cost price of gallery = $8400
Selling price of gallery = $12500
So, Gain on the sale of the sculpture would be
Selling price - Cost price
[tex]12500-8400\\\\=4100[/tex]
Hence, the amount of gain on the sale of sculpture is $4100 and its nature is considered as 'ordinary income'.