Pirmin's Bike Shop Is Behind on a Custom Bike and Needs

Pirmin's Bike Shop is behind on a custom bike and needs to crash 8 hours of time from the 8-step project. Given the project table below calculate the crash cost for 8 hours of time-savings. Suppose Pirmin calls the customer and asks for a project extension, reducing the amount of time he needs to crash. Calculate both the maximum time-savings available on a $25 crash budget and the cost to crash four hours of savings.
$$\begin{array} { | c | c | c | c | c | c | } \hline \text { Activity } & \begin{array} { c } \text { Dormal } \\\text { (hours) }\end{array} & \begin{array} { c } \text { Normal } \\\text { Cost (\$) }\end{array} & \begin{array} { c } \text { Crash } \\\text { Duration } \\\text { (hours) }\end{array} & \begin{array} { c } \text { Crash } \\\text { Cost (S) }\end{array} & \begin{array} { c } \text { Immediate } \\\text { Predecessors }\end{array} \\\hline \text { A } & 2 & 10 & 2 & 0 & \text { None } \\\hline \text { B } & 3 & 15 & 2 & 23 & \text { A } \\\hline \text { C } & 5 & 25 & 4 & 30 & \text { B } \\\hline \mathrm { D } & 3 & 20 & 1 & 24 & \text { C } \\\hline \mathrm { E } & 6 & 30 & 4 & 45 & \mathrm { C } \\\hline \mathrm { F } & 1 & 5 & 1 & 0 & \mathrm { E } \\\hline \mathrm { G } & 7 & 35 & 6 & 50 & \mathrm {~F} \\\hline \mathrm { H } & 10 & 50 & 7 & 80 & \mathrm { D } , \mathrm { G } \\\hline\end{array}$$