Chapter 4 Duality
and Post-Optimal Analysis
f
case because all it does is shift the surplus capacity in operation 3 to a surplus capacity in operation
1. TIle conclusion is that operation 2 is the bottleneck and it may be advantageous to
shift the surplus to operation 2 instead (see Problem 1, Set 4.5a). The selection of operation 2
over operation 1 is also reinforced by the fact that the dual price for operation 2 ($2/mi11) is
higher than that for operation 2 (= $l/min).