Acme Tobacco is currently selling 5,000 pounds of pipe tobacco per year. Due to competitive pressures, the average price of a pipe declines from $15 to $12. As a result, the demand for Acme pipe tobacco increase to 6,000 pounds per year.
a. What is the cross elasticity of demand for pipes and pipe tobacco?
b. Assuming that the cross elasticity does not change, at what price of pipes would the demand for pipe tobacco be 3,000 pounds per year? Use $15 as the initial price of a pipe.
Cross elasticity is the % change in quantity divided by %change in price.
%change in quantity
"\\frac{6000-5000}{5000}=0.2"
%change in price.
"\\frac{12-15}{12}=-0.75"
Price divided by elasticity
"\\frac {15}{0.2}=30."
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