Why do we argue that in the long run, perfect competition will result in efficiency? How is this related to the concept of normal profits and firm entry and exit from markets?

Economics: Private and Public Choice (MindTap Course List)
16th Edition
ISBN:9781305506725
Author:James D. Gwartney, Richard L. Stroup, Russell S. Sobel, David A. Macpherson
Publisher:James D. Gwartney, Richard L. Stroup, Russell S. Sobel, David A. Macpherson
Chapter25: The Supply Of And Demand For Productive Resources
Section: Chapter Questions
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1a)Why do we argue that in the long run, perfect competition will result in efficiency? How is this related to the concept of normal profits and firm entry and exit from markets?

1)bIn economics, we argue that the demand curve in competitive markets is where Px = MUx, ceteris paribus. Explain using sentences and words, what this idea means.

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