Three employees at a fast-food restaurant each perform one of the three activities in serving a customer: take the order, process the order, and deliver the order. The processing time for each activity is given as follows:   Activity Processing Time Take the order 30 seconds Process the order 2 minutes Deliver the order 1 minute

Practical Management Science
6th Edition
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Chapter2: Introduction To Spreadsheet Modeling
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Problem 20P: Julie James is opening a lemonade stand. She believes the fixed cost per week of running the stand...
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  1. Three employees at a fast-food restaurant each perform one of the three activities in serving a customer: take the order, process the order, and deliver the order. The processing time for each activity is given as follows:

     

    Activity Processing Time
    Take the order 30 seconds
    Process the order 2 minutes
    Deliver the order 1 minute

     

    Assume that the demand is 20 customers/hour. What is the average labor utilization?

      a

    38.9%

      b

    85.7%

      c

    66.7%

      d

    100%

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