Look at the tables below.



Instructions: Enter your answers as a whole number.



a. What is the total surplus if Bob buys a unit from Carlos?



$



b. What is the total surplus if Barb buys a unit from Courtney?



$




c. What is the total surplus if Bob buys a unit from Chad?



$




d. If you match up pairs of buyers and sellers so as to maximize the total surplus of all transactions, what is the largest total surplus that can be achieved?



$