In September, Cullumber Industries sold 800 units of product. The average sales price was \$45. During the month, fixed costs were $6,615 and variable costs were 75% of sales. (a) Your answer has been saved. See score details after the due date. Determine the contribution margin in dollars, per unit, and as a ratio. (Round Contribution margin to 0 decimal places, es. 5.275. Other all answers to 2 decimal places, e.g. 52.75.) Contribution margin (in dollars) Unit contribution margin Contribution margin ratio % Using the contribution margin technique, compute break-even salesdollars and sales units. Break-even sales (in dollars) Break-even sales (in units) units