A company makes two models of custom patio chairs - Model A and Model B. Model A chairs require 5 hours of carpentry time, 1 hour of staining, and 1.5 hours of assembly. Model B chairs require 4.5 hours of carpentry time, 1 hour of staining, and 1 hour of assembly. The total hours available for carpentry, staining, and assembly are 2,800, 800, and 600, respectively. The company has a contract requirement to sell at least 200 Model A chairs. The Model A chairs result in a profit of $75 and the Model B chairs result in a profit of $60