Consider the network shown in Figure 8.40. The numbers beside the nodes are the distances in miles and the estimated travel times in minutes. Clearly the figure is not to scale! (a) Find all solutions...

Consider the network shown in Figure 8.40. The numbers beside the nodes are the distances in miles and the estimated travel times in minutes. Clearly the figure is not to scale!

(a) Find all solutions on the trade off curve between distance and time if you want to go from San Francisco to San Diego. Plot the trade off curve with distance on the X-axis and time on the Y-axis.

(b) Are there any solutions that can only be found using the constraint method? If so, which solutions are they?