n September, Blossom Industries sold 800 units of product. The average sales price was $35. During the month, fixed costs were $6,405 and variable costs were 75% of sales. (a) Determine the contribution margin in dollars, per unit, and as a ratio. (Round Contribution margin to 0 decimal places, eg. 5,275. Other all answers to 2 decimal ploces, e. 3.52.75. Contribution margin (in dollars) $ Unit contribution margin $ Contribution margin ratio