MAX: 2X1 - X2 + X3
ST:
3X1 + X2 + X3 <= 60
X1 - X2 + 2X3 <= 10
X1 + X2 - X3 <= 20
X1, X2, X3 >= 0
Write the dual problem of the above primal. Determine the solutions for the dual problem (objective function and dual variables) from the final tableau of the primal.