In the month of June, Jose Hebert's Beauty Salon gave 4,200 haircuts, shampoos, and permanents at an average price of $25. During the month, fixed costs were $16,800 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, eg 5,75) Contribution margin $ Contribution margin per unit $ Contribution margin ratio