In September, Ivanhoe Industries sold 830 units of product. The average sales price was $45. During the month, fixed costs were $7,812 and variable costs were 60% of sales. (a) Your answer is correct. Determine the contribution margin in dollars, per unit, and as a ratio. (Round Contribution margin to O decimal places, e.g. 5,275. Other all answers to 2 decimal places, e.g. 52.75.) Contribution margin (in dollars) $ 14940 Unit contribution margin Contribution margin ratio eTextbook and Media 18 40 % (b) Using the contribution margin technique, compute break-even salesdollars and sales units. Break-even sales (in dollars) $ Attempts: 1 of 3 used Break-even sales (in units) eTextbook and Media units