5.

You like keeping your apartment tidy, while your roommate is a bit of a slob. Your demand for hours of time per week spent cleaning up is:

Your demand: P=20-2Q while your roommate's demand for hours of time per week spent cleaning up is: Roommate's demand: P=10-2Q.

Assume that time spent cleaning up the apartment is a public good and both you and your roommate value time at $12/hour.

a. How much time would you spend cleaning up on your own? How much time would your roommate spend cleaning up on their own?

b. What is your combined demand curve for hours of time per week spent cleaning up? What is the efficient number of hours spent cleaning up per week? Explain why it may be hard for you and your roommate to reach the efficient outcome