In June, Sheridan Salon gave 3,900 haircuts, shampoos, and permanents at an average price of $40. During the month, fixed costs were $38,040 and variable costs were 70% of sales. Determine the contribution margin in dollars, per unit, and as a ratio. (Round per unit value to 2 decimal places, e.g. 52.75 and final answer to O decimal places, e.g. 5,275.) Contribution margin (in dollars) $ Contribution margin (per unit) $ Contribution margin (ratio) % Using the contribution margin technique, compute the break-even sales dollars and sales units. Break-even sales dollars Break-even sales units $ units