A company which owns hauling trucks moves materials between three sources ...

      A   company which owns hauling trucks moves materials between three sources   (depots) and three destination projects. Project 1 needs 280 truckloads each   week, Project 2 requires 400, and Project 3 needs 160. Depot 1 can supply 240   truckloads; Depot 2, 320, and Depot 3, 280 each week. Cost information is   given below:      To   From         Project   1      Project   2          Project 3   Depot   1            1000             800                1800   Depot   2               800             600                1000                   Depot   3            1400             800                   400