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Five Jobs Are Waiting for Processing Through Two Work Centers

question 124

Multiple Choice

Five jobs are waiting for processing through two work centers. Their processing time (in minutes) at each work center is contained in the table below. Each job requires work center Sigma before work center Delta. According to Johnson's rule, what sequence of jobs will minimize the completion time for all jobs?
 Job  Sigma  Delta R4010S2530T5020U3535V5515\begin{array} { | c | c | c | } \hline \text { Job } & \text { Sigma } & \text { Delta } \\\hline R & 40 & 10 \\\hline \mathrm { S } & 25 & 30 \\\hline \mathrm { T } & 50 & 20 \\\hline \mathrm { U } & 35 & 35 \\\hline \mathrm { V } & 55 & 15 \\\hline\end{array}

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Definitions:

Estrogen

A collection of steroid hormones that support the growth and preservation of female body traits.

Progesterone

A steroid hormone released by the ovaries that prepares the uterus for pregnancy and maintains it until birth.

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A hormone produced by the pineal gland that regulates sleep and wake cycles.

Insomnia

Insomnia is a sleep disorder characterized by difficulty falling asleep, staying asleep, or getting restorative sleep, leading to daytime impairment.

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