solve 9.5

9.5 Registration at Dalhousie University has always been a time of emotion, commotion, and lines. Students must move among four stations to complete the trying semiannual process. Last semester's registration, held in the fieldhouse, is described in Figure 9.19. You can see, for example, that 450 students moved from the paperwork station (A) to advising (B), and 550 went directly from A to picking up their class cards (C). Graduate students, who for the most part had preregistered, proceeded directly from A to the station where registration is verified and payment collected (D). The layout used last semester is also shown in Figure 9.19. The registrar is preparing to set up this semester's stations and is anticipating similar numbers. FIGURE 9.19 Registration Flow of Students Interstation Activity Mix Pick up Advising Pick up Verification paperwork station class of status and forms cards and payment (A) (B) (C) (D) Paperwork/forms (A) 450 550 50 Advising (B) 350 200 0 Class cards (C) 0 0 750 Verification/payment (D) 0 0 0 Existing Layout A B C D -30' -30' -30' Figure 9.19 Full Alternative Text a. What is the "loadxdistance." or "movement cost," of the layout shown? b. Provide an improved layout and compute its movement cost