There are three consumers of a public good. The demands for the consumers are as follows: Consumer

Question:

There are three consumers of a public good. The demands for the consumers are as follows:
Consumer 1: P1 = 60 - Q
Consumer 2: P2 = 100 - Q
Consumer 3: P3 = 140 - Q
where Q measures the number of units of the good and P is the price in dollars. The marginal cost of the public good is $180. What is the economically efficient level of production of the good? Illustrate your answer on a clearly labeled graph.