The demand for trips across a river is Q = 1000 - 100P, where Q is the number of trips per WORK day (assume 250 workdays per year). If the interest rate is 6% determine which of the following options you would recommend to the government:

a. They can build a ferry for $350,000. It takes one year to build the ferry and it will run for three years. They would charge a price of $2 per ride, which would just cover the operating costs.

b. They can build a bridge for a cost of $20 million. The bridge would last forever and it would be free.

Hint: Draw an inverse demand curve (P as a function of Q) and calculate Consumer Surplus as a benefit per day under two scenarios: $2 in (a) and free ($0) in b.