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 aratio. (Round Contribution margin to o decimal places, e.g. 5.275. Other all answers to 2 decimal places, e.352.75.1 Contribution margin (in dollars) Unit contribution margin Contribution margin ratio Using the contribution margin technique, compute break-even sales dollars and sales units. Break-even sales (in dollars) Break-even sales (in units) units