An automated car wash serves customers with the following serial process: pre-tr

Question

An automated car wash serves customers with the following serial process: pre-treat, 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 4 workers. The steps of the process have the following processing times: Pre-treat: 4 minute per car Wash: 6 minutes per car Rinse: 4 minutes per car Wax: 5 minutes per car Hand dry: 13 minutes per car If the car wash has a demand of 11 cars per hour, what is the flow Round your answer to 2 decimal places) If the car wash has a demand of 11 cars per hour, what is the to nearest integer) a. rate of the process? (Do not round intermediate calculations. cars per hour b. utilization of the machine that performs the Wax process? (Round percent

Explanation / Answer

a) Demand for car wash - 11 cars per hour

Flow rate of each process -

Pre treat

= 60/4 = 15 cars

wash

= 60/6 = 10 cars

Rinse

= 60/4 = 15 cars

Wax

= 60/5 = 12 cars

Hand dry

= 60/13 = 4.6 cars

Total cars = 56.4

Flow ow rate of the process = 56.4/11 = 5.1 = 5 customers per hour (rounded)

b) Car wash has a demand of 15 cars per hour = 56.4 / 11 = 5.1cars

wax process = 56.4/12 = 4.7 cars

Utilization = 4.7/ 5.1 = 92.1%

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.