Answer:
$4,000
Explanation:
Sam's gross income from this transaction can be calculated by subtracting the price of the car and the tractor from the cost basis of the land.
Sam's gross income = cost basis of land - price of car and tractor = $20,000 - $16,000 = $4,000
In this case Sam's gain should be considered capital gains since it is a gain made from the selling investments that are held for more than 1 year.