Travel Cost and Total Willingness to Pay 4) People from zone 1 make a total of 200 trips which requires 40 miles round-trip travel, and people in zone 2 make 150 trips which requires 80 miles round-trip travel, and people in zone 3 make 100 trips which requires 120 miles RT travel. Assume there are equal numbers of people in each zone. Assume the only cost is travel, and it costs $0.25 per mile. The demand curve implied by the trips from the three zones is: P = 50 - 0.2Q.

a) Write out the demand and price schedule and draw and label the demand curve.

P	Q
10	200
20	150
30	100

c) What is the WTP if going to the site caused an externality? If this externality costs society $25 per trip, what is the total cost of people visiting the site as in part (a)? What are the total net benefits of visiting the site after considering externality?