PetroBucks operates a chemical facility. It emits air pollutants that impact the community. Assume that approximately 500,000 people living nearby are impacted, with an average cost or harm of $160 / year / person. For a $ 10,000,000 of investment, PetroBucks could install pollution control equipment that would reduce the impact to the community by 75%. It would cost about $500,000 per year to operate and maintain that equipment.

a) How long would it take for the benefits to the community to equal the cost of installing the equipment? (We are looking at capital cost of the equipment; for simplicity, do not bring in the operating costs here.) *HINT* it is less than a year

b) Once installed and operating, what is the benefit to the community each year for each dollar spend to operate and maintain this equipment?