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Questions › DSE › DSE 2013 › Q39
2 marksMicroeconomics › General equilibrium and exchange economies › Competitive equilibrium in an exchange economyHardabout 3 min

DSE 2013 Question 39: General equilibrium and exchange economies

In an exchange economy with agents 1 and 2 and goods xxx and yyy, agent 1 lexicographically prefers good xxx (of two bundles she strictly prefers the one with more xxx; if xxx is equal, the one with more yyy), while agent 2 lexicographically prefers good yyy. Suppose 1's endowment is (10,0)(10,0)(10,0) and 2's endowment is (0,10)(0,10)(0,10). The vector (px,py)(p_x,p_y)(px​,py​) is a competitive equilibrium vector of prices if and only if:

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In an exchange economy with agents 1 and 2 and goods x and y, agent 1 lexicographically prefers good x (of two bundles she strictly prefers the one with more x; if x is equal, the one with more y), while agent 2 lexicographically prefers good y. Suppose 1's endowment is (10,0) and 2's endowment is (0,10). The vector (pₓ,p_y) is a competitive equilibrium vector of prices if and only if: (A) pₓ=1=p_y (B) pₓ>0 and p_y>0 (C) pₓ>p_y>0 (D) p_y>pₓ>0

Also written as: In an exchange economy with agents 1 and 2 and goods x and y, agent 1 lexicographically prefers good x (of two bundles she strictly prefers the one with more x; if x is equal, the one with more y), while agent 2 lexicographically prefers good y. Suppose 1's endowment is (10,0) and 2's endowment is (0,10). The vector (p_x,p_y) is a competitive equilibrium vector of prices if and only if:

General equilibrium and exchange economies has come up 69 times in 7 exams since 2004.

What this question tests

This question is on Competitive equilibrium in an exchange economy, part of General equilibrium and exchange economies in Microeconomics.

Finding the prices at which every consumer's chosen bundle clears the market.

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