In the month of June, Jose Hebert's Beauty Salon gave3,900haircuts, shampoos, and permanents at an average price of $ 40 . During the month, fixed costs were $ 16,800and variable costs were 75% of sales.

Determine the contribution margin in dollars, per unit and as a ratio.(Round contribution margin per unit and contribution margin ratio to 2 decimal places, e.g. 5.25 & 10.50.)