solution

An automated car wash serves customers with the following serial process pretreat, wash, rinse, wax, hand dry. Each of these steps is performed by a dedicated machine except for the hand dry step, which is performed manually on each car by one of three workers. The steps of the process have the following processing times Pretreat: 1 minute per car • Wash: 5 minutes per car Rinse: 2 minutes per car Wax: 3 minutes per car • Hand dry: 8 minutes per car Which resource is the bottleneck of this process? (1034) b. If the car wash has a demand of 15 cars per hour, what is the flow rate of the process? 03-3] c. If the car wash has a demand of 15 cars per hour, what is the utilization of the machine that performs the wux process? 103-31 d. If the car wash has a demand of 10 cars per hour, what is the utilization of hand dry? 103-3] c. If the car wash has a demand of 10 cars per hour, what is the cycle time of the process (minutes ? L03-3] Page 67 I Starting from an empty system (and assuming the stations can work independently), how long would it take (minutes) to wash 5 cars?
 
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