Five Jobs Are Waiting for Processing Through Two Work Centers

question 101

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 Alpha before work center Beta. According to Johnson's rule, what is the optimum sequence of jobs and the minimum time for completion of all jobs?
$$\begin{array} { | c | c | c | } \hline \text { Job } & \text { Alpha } & \text { Beta } \\\hline R & 20 & 10 \\\hline \mathrm { S } & 25 & 35 \\\hline \mathrm { T } & 50 & 20 \\\hline \mathrm { U } & 15 & 35 \\\hline \mathrm { V } & 55 & 75 \\\hline\end{array}$$

• A) V-T-S-U-R; 225
• B) U-R-T-S-V; 175
• C) R-S-T-U-V; 240
• D) U-S-V-T-R; 200
• E) none of the above

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Definitions:

Potential Output

The highest level of GDP a country can achieve when its resources are fully employed, without causing inflation.

Labor Productivity

A measure of economic performance that compares the amount of goods and services produced (output) with the number of labor hours used to produce those goods and services.

Supply of Labor

Refers to the total hours that workers wish to work at a given wage rate, influenced by demographics, wages, and working conditions.

Aggregate Demand

The sum of all demand for products and services in an economy, indicating the total spending on goods and services at each price level.