It takes a barber 20 minutes to serve one customer. (Round your answers to 2 decimal places.) What is the capacity of the barber expressed in customers per 3. hour? customers per hour b. Assuming the demand for the barber is 3 customers per hour, what is the flow rate? customers per hour C. Assuming the demand for the barber is 3 customers per hour, what is the utilization? percent minutes per customer d. Assuming the demand for the barber is 3 customers per hour, what is the cycle time?