A popular vegan restaurant is known to have long waiting lines from 12-2 pm in the afternoon. Recently, due to an increase in demand, the amount of time that customers wait in the queue has increased. The manager does not want to lose customers due to this and hence decides to set up another counter to increase the overall service rate. The arrival rate has increased to 58 customers/hour. The current service rate with 4 counters in the restaurant is 60 customers/hour. (a) What is the average amount of time customers will wait in line under the current scenario? (in minutes)
(b) On average, how many customers will be waiting in the queue after the manager introduces another counter? Total service rate with 5 counters is 65 customers/hour.