John is thinking about getting into the tourism business in Oahu. He will take visitors on a whole-day trip to the main tourist spots on the island in a new van he is planning to buy. He would like to know how many tourists he has to move daily to have a before-taxes pro? t of $1000 per month so he can save that money. He will work 25 days per month. His costs for the new business would be as follows: Variable costs per day trip Gasoline: $ 30 Maintenance: $ 5 (oil, tune-ups, wheels, repairs, etc.) Fixed costs Leasing and insurance: $ 1000 per month Personal expenses: $1000 (the minimum amount he needs for living expenses) per month He is planning to charge $ 45 per visitor for a day trip. Using the break-even formula, John will need how many daily travelers in order to achieve a pro?t of $1000 per month