availability of close substitutes • Whether the good is a necessity or a luxury • How broadly you define the market • The time horizon being considered

1. Answer both parts of this question. (a) Define the price elasticity of demand and briefly discuss its economic meaning. (b) For demand function x = Ap, show that price elasticity is equal to -7.

6. With the aid of appropriate examples, outline the principal types of demand elasticity and their determinants. Explain and evaluate the importance of these elasticities to aid firms’ understanding of consumer behaviour in the markets for their goods and services?

7. Using the income elasticity of demand to characterize goods A survey taken by residents from the imaginary town of Draw City tells economists that the following changes result from a 10% rise in income: • A 2% increase in the quantity of tokens demanded • A 17% decrease in the quantity of kings demanded • A 34% increase in the quantity of queens demanded Compute the income elasticity of demand for each good and use the dropdown menus to complete the first column in the following table. Then, based on the income elasticities, classify each good as either a normal good or an inferior good. (Hint: Be careful to keep track of the direction of change. The sign of the income elasticity of demand can be positive or negative, and the sign gives important information.) Income Elasticity of Demand Normal Good or Inferior Good Good Tokens Kings Queens Which of the following three goods is most likely to be classified as a luxury good ? O Kings Tokens Queens

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