The table below shows a WBS with $11$ tasks. Note that each task has an ID$,$ a description, duration, and a reference to predecessor tasks, if any, which must be completed before the task can begin. Also note that dependent tasks can have one predecessor task or several. Construct a PERT$/$CPM chart from these tasks. Recall that this is done as a two$-$step process: $(1)$ display the tasks and task patterns, and $(2)$ enter start and finish time.

Task No$.$ Description Duration $($Days$)$

$1$ Develop Plan $1$

$2$ Assign Tasks $4$

$3$ Obtain Hardware $17$

$4$ Programming $70$

$5$ Install Hardware $10$

$6$ Program Test $30$

$7$ Write user Manual $25$

$8$ Convert Files $20$

$9$ System Test $25$

$10$ User Training $20$

$11$ User Test $25$