After Chelseas income increased from $12,000 to $18,000 a year, her purchases of CDs increased from 10

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After Chelsea’s income increased from $12,000 to $18,000 a year, her purchases of CDs increased from 10 to 40 CDs a year. Calculate Chelsea’s income elasticity of demand for CDs using the midpoint method.

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Essentials Of Economics

ISBN: 9781429278508

3rd Edition

Authors: Paul Krugman, Robin Wells, Kathryn Graddy

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