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 is correct. Determine the contribution margin in dollars, per unit, and as a ratio. (Found Contribution margin to decimal places, eg. 5,275. Other all answers to 2 decimal places, e.g. 52.75) (b) Contribution margin (in dollars) $ Unit contribution margin S Contribution margin ratio eTextbook and Media 9000 Using the contribution margin technique, compute break-even sales dollars and sales units. Break-even sales in dollars) 5 Break-even sales in units, units Attempts: 2 of 3 used