able to determine the activity times for constructing his laser scanning machineFletcher would like to determine ES$,$ EFLS, LF$,$ and slack for each activity. completion time and the critical path should also be determined. Here are the activity times: Activity Time $($weeks$)$ Immediate Predecessor$($s$)$ Activity Time $($weeks$)$ Immediate Predecessors$)$ A$75$B B $6$B C $108822$ EFGH Dave's earliest start $($ES$)$ and earliest finish $($EF$)$ are ActivityES EF $771381413231422$ Dave's latest start $($LS$)$ and latest finish $($LF$)$ are Activity LSLF