In the crew-scheduling problem, suppose that two extra flights are added to the current list. The first leaves Chicago at 11 A.M . and arrives in New York at 2 P.M . The second leaves New York at 6...

In the crew-scheduling problem, suppose that two extra flights are added to the current list. The first leaves Chicago at 11
_A.M. and arrives in New York at 2
_P.M. The second leaves New York at 6
_P.M. and arrives in Chicago at 8
_P.M. (Remember that all quoted times are EST.) Modify the model to incorporate these two new flights. What is the new optimal solution?