ECON 1B03 Lecture Notes - Lecture 5: Deadweight Loss, Pink Triangle, Competitive Equilibrium

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ECON 1B03 Full Course Notes
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ECON 1B03 Full Course Notes
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Total surplus = consumer surplus + producer surplus. Consumer surplus = value to buyers - amount buyer pays. Producer surplus = amount sellers receive - cost to sellers. Total surplus = value to buyers - cost to sellers. Equilibrium total surplus is maximized at equilibrium the equilibrium outcome is the e cient outcome total surplus triangle can"t be any bigger than it is when the market is at equilibrium. Example: consider a price of p1 - at p1 only q1 is traded in the market. Externalities: sometimes there are bene ts and costs that arise in the market that go uncompensated. Positive externality: a bene t enjoyed by individuals even though they did not pay to receive it. Ex. your neighbour goest o a garden centre, buys a big tree and you enjoy the shade the tree casts in your yard. Ex. a beekeeper farms bees to produce honey, but the bees also pollinate the owers that you enjoy.

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