You are a manager of a pharmaceutical rm that has a monopoly for a particular drug. Your staff has estimated the price elasticity of demand for the drug. When the price of the drug is $1,200 per dose, the price elasticity of demand is 3.0, and when the price is $300 per dose, the price elasticity of demand is 2.0. The marginal revenue of the drug when the price is $1,200 per dose is $|:|. (Round your answer to two decimal places.) The marginal revenue of the drug when the price is $300 per dose is $|:|