Answer:
1. 80
Step-by-step explanation:
MB = 400-2Q
Mc = 3Q
MB = Mc
= 400-2Q = 3Q
400=5Q
Q= 400/5
Q=8
Check attachment for diagram
3. The lake owner would be paying for the reduction in pollution. Mc = 0. He will be unwilling to make any offer that exceed this amount. The steel company would be unwilling to take anything below $400 since that is what he gets if nothing is produced. The lake owner would suffer a loss since the steel plant would continue production of 80 tons of pollution