*5. An LP model includes two variables Xl and X2 and three constraints of the type :5. The associated slacks are X3, X4, and xs' Suppose that the optimal basis is B = (PI> P2, P3), and its inverse is

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0 -1 B-1 = 0 1 1 -1, The optimal primal and dual solutions are X = (x1, x2, x3) = (2, 6, 2) Y = (23) = (0,3,2) Determine the optimal value of the objective function in two ways using the primal and dual problems.