Two firms are producing widgets. It costs the first firm and the second firm . If a total of q widgets are produced, consumers will pay 200 - q dollars for each widget. If the two manufacturers want...

Two firms are producing widgets. It costs the first firm
and the second firm
. If a total of q widgets are produced, consumers will pay 200 - q dollars for each widget. If the two manufacturers want to collude in an attempt to maximize the sum of their profits, how many widgets should each company produce? (The model for this type of problem is called a collusive duopoly model.)