Draw the cpm network with path duration and determine the critical path

76405 The activity table is given below 22/0519 Activity Predecessor Clear site Survey and layout Rough grade Drill wel Water tank foundations 3-9 Excavate sewer 7 3-10 Excavate electrical manholes 3-12 Pole line 4-5 Well pump 2 a. Draw the CPM network with path duration and determine the critical path b. Draw the CPM path with ES, EF,LS,LF and determine the critical path (10) Duration ON 2 2 H 4 P 1 UD N 6 OM un N N N N