twe Felcher was able 10 detertine the activity times for constructing his laser scanning machine. Fietcher would like to determine ES, EF, LS, LF, and slack for each activly The total project ongleson time and the criteal path should also be determined. Here are the activity limes: Dervis eariest start (ES) and eadest finiah (EF) are. Dave't imest alar (L.) and labsu trish (U) are: Dave's latest start (LS) and latest finish (LF) are: The slack times are: The activities on the critical path are The total project completion tifne for Dave :.