Data for a project are given in the table below.

Efficiency, Preliminary Efficiency, Normal Time to Completion, Minimum Time to Completion, Cost for Normal Time (CU million), cost for minimum time (million)

The network diagram of this project was drawn and the early/late times of the nodes were found with the CPM method. The resulting situation is as follows:

For the project in question, do the following:

a) Calculate the total abundances for each activity. b) Identify the critical path. c) What is the cost of completing the project in 7 days?

\begin{tabular}{|c|c|c|c|c|c|} \hline A & & 2 & 2 & 210 & 210 \\ \hline B & & 6 & 4 & 400 & 600 \\ \hline C & & 4 & 3 & 500 & 750 \\ \hline D & A & 3 & 2 & 540 & 600 \\ \hline E & C & 5 & 3 & 750 & 950 \\ \hline F & A & 4 & 3 & 275 & 310 \\ \hline G & BDE & 2 & 1 & 100 & 125 \\ \hline \end{tabular}