Final answer:
The amount of money Barrington Irving had when flying solo around the world is not commonly known and would require specific knowledge or research to provide an accurate answer.
Step-by-step explanation:
The question 'How much money did Irving have in his pocket when he flew solo around the world?' refers to Barrington Irving, who in 2007 became the youngest person at that time to fly solo around the world in a single-engine airplane, as well as the first black person to complete the journey. The correct answer is not common knowledge and would require specific knowledge or research to answer confidently. However, typically, such specific figures are not part of standard historical knowledge or curriculum, and it might be referring to an anecdote from Irving's personal experiences. If this is a question from a specific textbook, article, or curriculum where this fact is highlighted, you would need to refer to that resource to find the correct answer.