In the month of June, Cullumber Hebert's Beauty Salon gave 5.000 haircuts, shampoos, and hair colorings at an awerage price of $45. During the month, fixed costs were $18,000 and variable costs were 80% of sales. (a) Determine the contribution murgin in dollars, per unit and as a ratia. (Round contribution marglu per unit to 2 decimal places, es. 5.75) eTextbook and Media Attempts: 0 of 3 used (b) The pers of this questiun must be completed in order, This part wa be avalable when you complete the part above