Carol Cagle has a repetitive manufacturing plant pro-ducing trailer hitches in Arlington, Texas. The plant has an average inventory turnover of only 12 times per year. She has therefore deter-mined that she will reduce her component lot sizes. She has devel-oped the following data for one component, the safety chain clip: Annual demand = 31,200 unitsDaily demand = 120 unitsDaily production (in 8 hours) = 960 unitsDesired lot size (1 hour of production) = 120 unitsHolding cost per unit per year = $12Setup labor cost per hour = $20 How many minutes of setup time should she have her plant man-ager aim for regarding this component?

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Carol Cagle has a repetitive manufacturing plant pro-
ducing trailer hitches in Arlington, Texas. The plant has an average

inventory turnover of only 12 times per year. She has therefore deter-
mined that she will reduce her component lot sizes. She has devel-
oped the following data for one component, the safety chain clip:

Annual demand = 31,200 units
Daily demand = 120 units
Daily production (in 8 hours) = 960 units
Desired lot size (1 hour of production) = 120 units
Holding cost per unit per year = $12
Setup labor cost per hour = $20

How many minutes of setup time should she have her plant man-
ager aim for regarding this component?

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