Answer:
The answer is: If Allen is a professional gambler, he can use his gambling losses to offset the income from his gambling activities.
Explanation:
We can consider the airfare and hotel expenses as income part of Allen's income (+$3,000) but since he lost more money in the casino (-$25,000), the net effect is an economic loss (-$22,000).
That economic loss isn't tax deductible unless he was a professional gambler, then he could offset his income by $22,000.
