Lets assume that Best Burger is willing to assign a cost of $12 per hour for customer waiting time. The average arrival rate is 45 customers per hour and each server can process 1 customer per minute. The cost of wages and benefits is $10 per hour, per server. a) Calculate the total hourly cost for the single-channel b) Calculate the total hourly cost for the two-channel systems c) Which one, single-channel or two-channel, system is more cost effective?