A company needs to locate three departments (X, Y, and Z) in the three areas (I, II, and III) of a new facility. They want to minimize interdepartmental transportation costs, which are expected to be $0.50 per load meter moved. An analyst has prepared the following flow and distance matrices: Distances (meters) From/To || III - 10 20 11 10 III Flows (loads per week) From/To X Y Z 0 80 Y 30 150 Z 100 130 - What is the total flow (loads per week) between department Y and department Z? 280 230 150 180 130