Answer:
change in buyers' incomes.
Step-by-step explanation:
Income elasticity of demand measures the responsiveness of quantity demanded to changes in income of the consumer.
Income elasticity of demand = percentage change in quantity demanded / percentage change in income
Cross price elasticity of demand measures the responsiveness of quantity demanded of good A to changes in price of good B
Price elasticity of demand measures the responsiveness of quantity demanded to changes in price.
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