Problem

Johnny Moreno travels from New York to Miami on a business trip. Three days of the trip are spent conducting business activities and one day is spent on personal sightseeing activities. Johnny incurs $700 in airfare costs in going to and returning from Miami and $150 a day in expenses for qualified meals and lodging while in Miami. Johnny receives a $800 reimbursement from his employer for these travel costs. What amount is deductible on Johnny's tax return for travel expenses related to the above activities?