Vehicles arrive at a toll booth starting at 5:55 AM at a rate of lambda (t )space equals space 6.0 space minus 0.07 t [with lambda (t )in veh/min and t in minutes after 5:55 AM]. The toll booth opens at 6:00 AM and processes vehicles at a rate of mu (t )space equals space 2.0 space plus 0.5 t [with mu (t )spacein veh/min and t in minutes after 6:00 AM] until a rate of 5.0 veh/min is reached and the service rate remains at 5.0 veh/min until the queue clears. Assuming D/D/1 queuing, when does the queue clear (in minutes after 5:55 AM) and what is the average delay per vehicle