A company sells two products with information as follows:

	A	B
Sales price per unit	$11	$28
Variable cost per unit	$10	$10

The products are machine made. Four units of product A can be made with one machine hour and two units of product B can be made with one machine hour. The company has a maximum of 3,000 machine hours available per month. The company can sell up to 18,000 units of product A per month, and up to 3,000 units of product B for the month. What is the optimum product mix to maximize company's operating income?