Answer / Explanation
Numbers of drivers in Los Angeles that incur an additional 30 minutes of traffic delays = 500000
Neither of the cities
Hence,
L.A. = O.50 hrs. x 500,000 drivers at $15/hr implies a cost of $3,750,000 ) Boston = 0.75 hrs. x 200,000 drivers at $25/hr implies $3,750,000