Suppose the demand curve for a product is given by
Q = 10 - 2P + Ps
where P is the price of the product and Ps is the price of a substitute good. The price of the substitute good is $2.00. a. Suppose P = $1.00. What is the price elasticity of demand? What is the cross-price elasticity of demand?
b. Suppose the price of the good, P, goes to $2.00. Now what is the price elasticity of demand, and what is the cross-price elasticity of demand?