TB MC Qu$.04-38$ C&A Fast Food has four activities...

C&A Fast Food has four activities in serving a customer: greet customer, take order, process order, and deliver order. Each activity is staffed by one employee $($for a total of four employees$).$ The processing time for each activity is given as follows:

Activity Processing time per customer Wage rate $($$ per hour$)$

Greet customer $2$ seconds $5$

Take order $30$ seconds $5$

Process order $60$ seconds $15$

Deliver order $5$ seconds $8$

Assume demand is unlimited. If two additional employees are added to the current bottleneck activity, what will be the average labor utilization?