Question: A transportation model that is initially unbalanced may require the addition of both a dummy source and a dummy destination toeffect balancing.In the artificial constraint

A transportation model that is initially unbalanced may require the addition of both a dummy source and a dummy destination toeffect balancing.In the artificial constraint method, if the associated artificial constraint slack variable is in the final optimal basis at a positive value,then the artificial constraint is nonbinding at the final solution, and hence the finite optimal solution is obtained.For a feasible pair of primal and dual solutions, the objective value in the primal can never exceed that of the dual, regardless of whichproblem is maximization and which is minimization.TorF

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