Ton –Mile – Center Solution: it combines the variables of weight and distance in selecting warehouse locations. This solution considers the frequency of delivery to each destination in when selecting a warehouse location. This solution also requires an iterative process since the distance between demand point and warehouse is included.
Where Yk,Xk= co-ordinate values of the warehouse for iteration k.
Xi,Yi= demand pint designated by the appropriate subscript.
Fi= annual tonnage to each demand point, expressed as standard.
di= distance between each demand point (Xi,Yi) and warehouse location for iteration k.
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