Moderate

If the quantity demanded of beef increases by 5% when the price of chicken increase by 20% the cross-price elasticity of demand between beef and chicken is ?

Correct answer: B. 0.25

  • A. -4
  • B. 0.25
  • C. 4
  • D. -0.25

Explanation

Cross-price elasticity equals the percentage change in quantity demanded of beef divided by the percentage change in the price of chicken: 5% ÷ 20% = 0.25. Its positive sign shows that beef and chicken are substitutes.

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Individual consumers, firms and markets are examined through demand and supply, elasticity, consumer choice, production, costs, revenue and the determination of prices and output. The topic also covers market structures such as perfect competition, monopoly and oligopoly, plus market failure, externalities and the distinction between microeconomic decisions and economy-wide outcomes.

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