There are only two firms in the widget industry. The total demand for widgets is Q = 30 - 2P. The two firms have identical cost functions:© BrainMass Inc. brainmass.com October 9, 2019, 8:35 pm ad1c9bdddf
Q = 30-2P; TC = 3+10Q
TC = 3+10*(30-2P) = 303 - 20P
The point to maximize profit is noted.