Cross-price elasticity of demand is
a. negative for complementary goods.
b. negative for substitute goods.
c. positive for general goods.
d. unitary for secondary goods.
Cross price elasticity of demand is given by the percentage in quantity demanded due to a percentage change in the price of its related goods.
eC = % change in quantity demanded / % change in price of related goods
For complementary goods, ec < 0 which means that % change in quantity demanded is less than % change in price of related goods.
For substitute goods, ec > 0 which means that % change in quantity demanded is greater than % change in price of related goods.
The answers is (a) negative for complementary goods.
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