also find an answer using excel.. to the questions

Waiting Line Activity Star Tour ride at Disney World has a total of 8 simulators that can hold 40 guests each. It take 12 minutes on average for each ride. This includes the actual ride time and the loading and unloading time. 1427 customers per hour on average will arrive at the ride. The ride has two waiting lines: one for the fast pass and the premium members. The second line is for regular guests. 30% of the people arriving at the ride will go through the fast line; the remaining 70% will use the regular line. The regular line is serced by 5 simulators while the fast line is served by 3 simulators. 1. What's the average waiting time at the regular line (W) 2. What's the average waiting time at the fast line (W) 3. What's the average waiting time in the ride? 4. How can we improve the performance of the system