three models are as follow: The Plastic Company makes three sizes of chairs, Large, Medium, and Small. Data for the Large Selling Price per unit Variable cost per unit Medium Small $36 $22 $28 13 18 16 The monthly fixed costs are $ 90,000. The sales mix is 2 Large: 3 Medium: 4 Small. Required: 1. Determine the break-even point (in units) in total and by each product? How many units of each product must be sold to earn a profit of $18,000 per month?