Answer:
$20,000
Step-by-step explanation:
Based on the information given the basis of the land to Yew Corporation will be the amount of $20,000 which represent the cost of acquiring the land less mortgage reason been that we were told that the land was acquired by Robert 5 years ago at the amount of $30,000 in which it was subject to $10,000 mortgage.
Hence,
Basis=Cost of land -Mortgage
Basis=$30,000-$10,000
Basis=$20,000