In the month of June, Jose Hebert's Beauty Salon gave 4,125 haircuts, shampoos, and permanents at an average price of $25. During the month, fixed costs were $16,500 and variable costs were 75% of sales. Determine the contribution margin in dollars, per unit and as a ratio. (Round contribution margin and contribution margin per unit to 2 decimal places, e.g. 5.75.) Contribution margin $ Contribution margin per unit $ Contribution margin ratio