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Joint Surplus Definition
Total Surplus as a Price-Independent Sum of Consumer and Producer Surplus
The total surplus, representing the combined gains from trade in a market, is the sum of the consumer surplus and the producer surplus. While this calculation shows how benefits from transactions are divided, the total surplus itself depends only on the quantity of the good sold, not its price. This is because for any given transaction, the price paid is a loss for the consumer but an equal gain for the producer. Therefore, when these individual surpluses are aggregated to find the total surplus, the price transfer between the two parties cancels out, making the total surplus a function solely of the quantity exchanged, N(Q).
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Introduction to Microeconomics Course
The Economy 2.0 Microeconomics @ CORE Econ
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Maximizing the Gains from Trade
Total Surplus as a Price-Independent Sum of Consumer and Producer Surplus
Calculating Gains from a Transaction
A student is willing to pay a maximum of 30 or more. They eventually agree on a price of $50. Given this transaction, what is the total joint surplus created for both individuals combined?
A buyer is willing to pay up to 60 or more. If they successfully negotiate a price and complete the transaction, how does the final agreed-upon price affect the total joint surplus created?
In a voluntary transaction between one buyer and one seller, if the final agreed-upon price is set closer to the buyer's maximum willingness to pay, the total joint surplus generated by the transaction is larger than if the price were set closer to the seller's minimum willingness to accept.
An economic agent is trying to facilitate a single trade to create the maximum possible economic value. The agent has identified four potential pairings of a buyer and a seller for a specific unique good. Which of the following pairings should be matched to generate the largest total gain from the transaction?
Analyzing Gains from a Transaction
Distribution of Gains in a Transaction
Consider the following transaction: A buyer, who is willing to pay up to 90. They agree on a final price of $110. Match each economic concept to its correct monetary value based on this transaction.
Analyzing Unrealized Gains from Trade
Conditions for a Mutually Beneficial Transaction
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Visualizing Total Producer Surplus as an Area in the Beautiful Cars Model
Visualizing Total Consumer Surplus as an Area in the Beautiful Cars Model
Consumer Surplus
Producer Surplus
Relative Elasticities and Surplus Distribution
Visualizing Total Gains from Trade in the Bread Market Diagram (Figure 8.12)
Consider a market where 500 units of a good are being bought and sold. A new government policy is implemented that causes the market price to fall, but the total number of units exchanged in the market remains unchanged at 500. What is the most likely impact of this price decrease on consumer surplus, producer surplus, and total surplus?
Evaluating Policy Arguments on Market Surplus
A technological innovation allows producers to lower their prices. If this change results in the exact same number of units being sold as before the innovation, the total surplus in the market will increase.
Analyzing Surplus in a Market with a Price Change
The Role of Price in Total Surplus Calculation
Evaluating a Policy Statement on Market Surplus
A market is initially in a state where 100 units of a good are exchanged. For each independent scenario described below, match it with the correct resulting impact on consumer surplus, producer surplus, and total surplus.
Consider a market for a specific good. In Scenario X, a government intervention results in 50 units of the good being exchanged at a price of 25 per unit. Assuming the underlying willingness to pay for buyers and willingness to accept for sellers for these 50 units are the same in both scenarios, how does the total economic gain (the sum of benefits to all buyers and sellers) in Scenario X compare to that in Scenario Y?
A single unit of a good is exchanged in a market. The buyer's willingness to pay for the unit is 30. The transaction occurs at a price of $60. Which of the following expressions correctly represents the calculation of the total surplus generated from this transaction by summing its component parts?
While a change in the market price of a good will redistribute the gains from trade between buyers and sellers, it does not alter the total surplus as long as the ________ of goods exchanged remains constant.