Answer:
The gain reported is $60,000
Step-by-step explanation:
The computation of the gain or loss reported is as follows;
Book value as on December 31 2017 $780,000
Add: balance of unrealized loss ($40,000 loss - $20,000 gain) $20,000
Total $800,000
Gain (sale value - total) ($860,000 - $800,000) $60,000
hence, the gain reported is $60,000