Th crown barber shop employee 4 barbers. One marber, who serves as a manager is paid a salary of $3, 900 per month. The other 3barber are paid $1, 900 per month In addition each barber is paid a commission of $2.00 per haircut Crown charges $10.00 per haircut determine which costs are fixed & variable by completing the following chart determine total fixed cost & variable cost per haircut fixed variable determine the contribution margin for the month