Answer:
$31,000
Explanation:
Before the sale of the investment property, the book value is calculated as follows.
Book Value = beginning basis + capital improvements - depreciation
= 77,000 + 4,000 - 15,000
= book value = $66,000.
Therefore, capital gain on the sale
= sales value - book value
= 97,000 - 66,000
= $31,000.