Ruth’s Rubies is a single-price monopolist in the market for rubies. Suppose Ruth’s Rubies currently charges $200 for its rubies (i.e. sells 3 rubies). If it lowers the price to $100 (to sell 4 rubies), how large is:           The quantity effect? The price effect?       Price of a Ruby Quantity of Rubies           Demanded Total Revenue Marginal Revenue    $500      0      0        400      1      400      400      300      2      600      200      200      3       600      0      100      4     400     200          0      5       0    400

Microeconomic Theory
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ISBN:9781337517942
Author:NICHOLSON
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Chapter18: Asymmetric Information
Section: Chapter Questions
Problem 18.3P
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Ruth’s Rubies is a single-price monopolist in the market for rubies.

Suppose Ruth’s Rubies currently charges $200 for its rubies (i.e. sells 3 rubies). If it lowers the price to $100 (to sell 4 rubies), how large is:          

The quantity effect?

The price effect?

 

 

 

Price of a Ruby

Quantity of Rubies           Demanded

Total Revenue

Marginal Revenue

   $500

     0

     0

 

     400

     1

     400

     400

     300

     2

     600

     200

     200

     3

      600

     0

     100

     4

    400

    200

         0

     5

      0

   400

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