Precision Machining Industries has six departments, which are assigned in its facility as shown in Figure 1. These departments have an equal area of 80'x60' each. The estimated daily movements among departments are given in Table 1. There are no walls between departments, but there is a network of horizontal and vertical aisles throughout the facility, so travel distance is approximately rectilinear (movement can only be horizontal and/or vertical but not diagonal). 80' Location 3 Location 2 A 80° B Location I 60° D Location 4 60' E Location 5 Location 6 Figure 1: Existing Layout Table 1: Inter-department flows or trips Department ABCDEI A B C D E F - 20 40 10 0 10 20 20 40 60 50 10 40 30 90 20 F F Assuming all flows are equally costly per unit distance, and using the centre of each department as the location of the department: a) Compute the daily flow cost (in feet) for the current layout.