Should we add as well a constraint that the cost should not exceed 750,000$? it might not affect the end result but let's say that the order they received was 300,000$ should we be always checking that they will remain profitable?
what if there was more than one outsourcer not just one to the models bought. as in the problem the models bought goes to one outsourcer1 ( M1 61 M2 97 M3 145). if outsourcer2 gets say ( M1 72 M2 94 M3 139) and outsourcer 3 gets say ( M1 58 M2 105 M3 148) hw will the problem be?