Consider the following demand and supply relationships in the market for tennis balls: Qd = 90-2p - 4G and Qs = −8+5p - N, where G is the price of graphite, a material used to make tennis rackets, and N is the price of nylon. If N = 4 and G = 20. At the equilibrium values, calculate the cross-price elasticity of demand for tennis balls with respect to the price of graphite. What does the sign of this elasticity tell you about whether tennis balls and graphite are substitutes or complements? 35, goods are substitutes -23, goods are complements -18, goods are substitutes -7, goods are complements -40, goods are complements

ENGR.ECONOMIC ANALYSIS
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Author:NEWNAN
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Chapter1: Making Economics Decisions
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Consider the following demand and supply relationships in the market for tennis
balls: Qd = 90 - 2p - 4G and Qs -8 + 5p N, where G is the price of
graphite, a material used to make tennis rackets, and N is the price of nylon. If
N = 4 and G = 20. At the equilibrium values, calculate the cross-price elasticity
of demand for tennis balls with respect to the price of graphite. What does the sign
of this elasticity tell you about whether tennis balls and graphite are substitutes or
complements?
35, goods are substitutes
-23, goods are complements
-18, goods are substitutes
-7, goods are complements
-40, goods are complements
Transcribed Image Text:Consider the following demand and supply relationships in the market for tennis balls: Qd = 90 - 2p - 4G and Qs -8 + 5p N, where G is the price of graphite, a material used to make tennis rackets, and N is the price of nylon. If N = 4 and G = 20. At the equilibrium values, calculate the cross-price elasticity of demand for tennis balls with respect to the price of graphite. What does the sign of this elasticity tell you about whether tennis balls and graphite are substitutes or complements? 35, goods are substitutes -23, goods are complements -18, goods are substitutes -7, goods are complements -40, goods are complements
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