Answer:
$500,000
Step-by-step explanation:
Actual amount contributed by Hal to the land purchase = Contribution - Gift from mandy = $300,000 - $200,000 = $100,000
Hal's contribution weight in the land = 100,000 ÷ 600,000 = 1 ÷ 6
Hal's gross estate in the land = $3,000,000 × (1 ÷ 6) = $500,000
Therefore, as to the land, hal's gross estate must include $500,000.