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The North-West Corner Method is a simple method for finding an initial basic feasible solution (IBFS) to a transportation problem. The given transportation table consists of supply and demand values: ### Given Data: #### Cost Matrix: \[ \begin{array}{c|ccccc} & D_1 & D_2 & D_3 & D_4 & \text{Supply} \\ \hline S_1 & 90 & 90 & 100 & 110 & 200 \\ S_2 & 50 & 70 & 130 & 85 & 50 \\ S_3 & 75 & 100 & 100 & 30 & \text{Total} \\ \hline \text{Demand} & 75 & 100 & 100 ______ ______ ___ _____ ___ ________ __________ ___ _____.
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