Please please sir answer

On Friday nights, patients arrive at the emergency room of a hospital following a Poisson distribution at an average rate of 40 per hour. Assume that it takes on average 1.2 minutes for an emergency room physician to treat a patient and that the treatment time follows an exponential distribution. The board of directors for the hospital is considering recruiting a second emergency room physician who will also take on average 1.2 minutes to treat a patient. The payment rate for an emergency room physician is R200 per hour. Assume the average waiting time in the system with 2 doctors is 1.428 minutes. h. What would the board of directors have to price the inconvenience cost (cost of waiting) to the patient in Rands per patient minutes saved to justify hiring the second emergency room physician?