Using data from Questions $11$ and $12$:

Add a second shift to the project to reduce the project duration.

The $2$nd shift adds $15\%$ to the cost of labor that works the second shift.

Working the $2$nd shift increases the overall productivity of labor on a given calendar day by $87\mathrm{.}5\%.$

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What is the optimal combination of lowest possible total cost $($in dollars$)$ and minimum total project duration $($in days$)$ for this project? Document your crashing strategy, in other words, clearly state which activities should be crashed. Use the following worksheet to document your crashing strategy for each iteration:

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Activity

Original duration $($d$)$

Original No$.$ of workers per day

Original total labor per activity $($worker$-$days$)$

Labor unit cost $($$$/$worker$-$day$)$

Original labor cost $($$$)$

Crashed duration $($d$)$

Saved cost by crashing duration $($$$)$

Added cost from $2$ndshift $(+$$$)$

Net added cost or savings $(+/$$$)$

A

$5$

$5$

$$

$$

$$

$$

$$

$$

$$

B

$9$

$6$

$$

$$

$$

$$

$$

$$

$$

C

$7$

$8$

$$

$$

$$

$$

$$

$$

$$

D

$3$

$3$

$$

$$

$$

$$

$$

$$

$$

Total

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$$

$$

$$

$$

$$

$$

$$

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