Problem $4$

For the project in Problem $2,$ normal time $($in days$)$ and normal cost $(\backslash$$$),$ and crash time $($in days$)$ and crash cost $(\backslash$$$)$ is given for each task as follows:

a$.$ Formulate an appropriate crashing model to achieve a completion time of $30$ days or less.

$(10$ points$)$

b$.$ Use Excel QM to determine which tasks should be shortened to achieve this goal and by how much? $(8$ points$)$

c$.$ How much will it cost to achieve this goal? $(4$ points$)$