Answer:
The contribution margin ratio is closest to 40%
Explanation:
The contribution margin ratio calculates the percentage of sales that will contribute to cover fixed costs and earn a profit. The contribution margin is the difference between the selling price per unit and the variable cost per unit of a product. The contribution margin ratio is the contribution margin per unit represented as a percentage of selling price per unit or total contribution margin represented as a percentage of total sales revenue.
CM Ratio = Total contribution margin / Total Sales revenue
CM ratio = 72000 / 180000 = 0.4 or 40%