1. **Problem Statement:** Define consumer surplus and producer surplus, explain the effect of a binding price floor on market surplus, and discuss deadweight loss and why it occurs. 2. **Definitions:** - Consumer Surplus (CS) is the difference between what consumers are willing to pay and what they actually pay. Mathematically, it is the area above the market price and below the demand curve. - Producer Surplus (PS) is the difference between the market price and the minimum price producers are willing to accept. It is the area below the market price and above the supply curve. 3. **Effect of a Binding Price Floor:** A binding price floor is set above the equilibrium price, causing the price to be artificially high. - This leads to a surplus of goods because quantity supplied ($Q_s$) exceeds quantity demanded ($Q_d$). - Consumer surplus decreases because consumers pay a higher price and buy less. - Producer surplus may increase or decrease depending on the change in quantity sold and price. - Overall market surplus (total welfare) decreases due to inefficiency. 4. **Deadweight Loss (DWL):** - DWL is the loss of total surplus that occurs because the quantity traded is less than the equilibrium quantity. - It is the area between the supply and demand curves from $Q_d$ to $Q_s$. - DWL occurs because the price floor prevents mutually beneficial trades between buyers and sellers. 5. **Summary:** - Consumer Surplus: area between demand curve and price. - Producer Surplus: area between price and supply curve. - Binding price floor reduces total surplus and creates deadweight loss.