Qd=60-40P+2I-30Py where: Qd is the quantity demanded of Good X P is the price of Good X I is income Pb is the price of Good Y Assume that the price of Good Y is $6 and income is $700. a. Compute the price elasticity of demand for Good X when the price of Good X is $12. b. Suppose the price of Good X is $12.  Using calculus, compute the cross-

ENGR.ECONOMIC ANALYSIS
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Chapter1: Making Economics Decisions
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The demand for Good X in New Bedford, MA is given by the following equation:

Qd=60-40P+2I-30Py

where:

Qd is the quantity demanded of Good X

P is the price of Good X

I is income

Pb is the price of Good Y

Assume that the price of Good Y is $6 and income is $700.

a. Compute the price elasticity of demand for Good X when the price of Good X is $12.

b. Suppose the price of Good X is $12.  Using calculus, compute the cross-price elasticity of demand of Good X for Good Y.  Explain the meaning of the value you computed.

c. Suppose the price of Good X is $12.  Using calculus, compute the income elasticty of demand. Explain the meaning of the value you computed.

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