Using the output below, how much is each additional unit of skilled labor worth? Variable Cells Final Reduced Objective Allowable Allowable Cell Name Value Cost Coefficient Increase Decrease $B$18 SemiAuto 74 0 800 628.5714 432.4786 $C$18 Robotic 23 0 1000 1666.6667 440 $D$18 Manual 0 -320.253 500 320.2531 1E+30 Constraints Final Shadow Constraint Allowable Allowable Cell Name Value Price R.H. Side Increase Decrease $B$24 Skilled labor 4500 5.57 4500 3605.2631 1800 $B$25 Unskilled labor 9000 6.33 9000 3805.5556 5850 $B$26 Assembly line 1566.46 0 2000 1E+30 433.5443