A service facility has two servers, each with a service rate of 5 customers per hour. The arrival rate is 9 customers per hour. We can assume random arrivals and service times (Poisson and exponential). With a single line, the average waiting time in the system (Ws) is 1.05 hours. Instead, if two separate lines are created, with the arrivals split between the two, then we have two lines, each with an arrival rate of 4.5 customers per hour and a service rate of 5 customers per hour. What would be the average waiting time in the system (Ws) for customers now (in hours)?