willy, a self-employed laboratory consultant, flew to buffalo where he stayed 3 days (2 days were on business). airfare was $300, meals not provided by a restaurant were $20 per day, and lodging was $20 per day. from buffalo, willy flew to vancouver, canada, where he spent 2 weeks on business and 1 week with relatives. airfare to vancouver and back home was $600. in vancouver, food not provided by a restaurant was $100 per week, and lodging was $200 per week. what is willy’s deductible travel expense for the trip?