Use the Information in the Table (All Times Are in Days)to

question 28

Multiple Choice

Use the information in the table (all times are in days) to determine the lowest cost minimum completion time if the base cost for each activity finished in normal time is $1,000. $\begin{array}{|l|l|l|l|l|} \hline&\text { Normal }&\text {Minimum}&\text { Crash Cost }\\ \text {Activity}&\text {Time}&\text {Time}&\text { (\$/day) }& \text { Predecessor }\\\hline \mathrm{A}& 10 & 6 & \$ 70 & -- \\ \hline\mathrm{ B} & 6 & 3 & \$ 40 & -- \\\hline \mathrm{C} & 2 & 2 & - & \mathrm{ B } \\\hline\mathrm{D} & 4 & 2 & \$ 60 &\mathrm{C } \\\hline \mathrm{E} & 6 & 4 & \$ 80 & \mathrm{ A } \\\hline \mathrm{F} & 8 & 5 & \$ 90 & \mathrm{D}, \mathrm{ E }\\\hline \end{array}$

• A)$7,120
• B)$6,910
• C)$6,790
• D)$6,830

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Definitions:

Continental Crust

The thick, buoyant part of the Earth's crust that forms the continents, contrasted with the denser oceanic crust.

Thickness

The measurement from one surface of an object or material to the opposite surface.

Intrusions

Masses of igneous rock that have forcibly inserted themselves into preexisting rock formations.

Regional Land Elevation

The average height of the land surface of a specific area relative to sea level, which can influence climate, vegetation, and human settlement.