The demand for company X's product is given by Qx = 12 – 3Px + 4Py. Suppose good X sells for $3.00 per unit and good Y sells for RM1.50 per unit. Calculate the cross-price elasticity of demand between goods X and Y at the given prices. Are goods X and Y substitutes or complements? What is the own price elasticity of demand at these prices?

Microeconomics: Private and Public Choice (MindTap Course List)
16th Edition
ISBN:9781305506893
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
Chapter7: Consumer Choice And Elasticity
Section: Chapter Questions
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The demand for company X's product is given by Qx = 12 – 3Px + 4Py. Suppose good X sells for $3.00 per unit and good Y sells for RM1.50 per unit.

  1. Calculate the cross-price elasticity of demand between goods X and Y at the given prices.
  2. Are goods X and Y substitutes or complements?
  3. What is the own price elasticity of demand at these prices?
  4. How would your answers to parts i and iii change if the price of X dropped to RM2.50 per unit? 
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