Registration at Southern University has always been a time of emotions, commotions, and lines. students must move among 4 stations to complete the process. last semester's registration is in fig. 9.20. 450 students moved from the paperwork station (A) to advising (B) and 550 students went directly from (A) to pick up class cards (C). preregistered graduate students went directly to pay (D). A to D is in a linear fashion and the distance from A to B, B to C, and C to D is 30feet.

 a. calculate the movement cost or 'load x distance' of the layout

 b. provide an improved layout and provide its movement cost