A Hatmaker, Fresh Off a Very Successful Showing at Lidzapalooza

A hatmaker, fresh off a very successful showing at Lidzapalooza is excited about the prospects of providing the finest chapeaus to meet the needs of his energized customer base in the coming year. He and his space designer have identified seven activities that are necessary to expand his small shop. For the sake of simplicity, and to avoid giving away any trade secrets, the activities have been identified by letters A-G. The activities, their time estimates, and the precedence requirements structure are listed in the table immediately below. Use this table to answer the following question.
$$\begin{array} { | c | c | c | } \hline \text { Activity } & \text { Predecessors } & \text { Time (weeks) } \\\hline \text { A } & - & 7 \\\hline \text { B } & \text { A } & 6 \\\hline \text { C } & \text { A } & 10 \\\hline \text { D } & \text { C } & 12 \\\hline \text { E } & \text { B, C } & 5 \\\hline \text { F } & \text { D, E } & 11 \\\hline \text { G } & \text { F } & 8 \\\hline\end{array}$$ Refer to the scenario above. What are the earliest and latest start and finish times for all of these activities?

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