NOTE -Lag in these problems is represented in the form "(PredecessorID)-(tagType) + (lagtime)". Eg. "B-fs +5" means task ID B is the predecessor and has a finish-to-start relationship with a lag of 5 time units to the current task ID. fs = finish to start sf = start to finish ff = finish to finish ss = start to start Problem 1 Create the project network diagram. Calculate the early, Jate, and slack times for each activity. Identify the critical path. ID Duration Predecessors) 10 A B 15 A 5 B-fs +5 D C-sf + 20 B 20 E Dff - 25 15 D F E-1 + 0 c.fs + 10 10 G 20 H Geff 10 Problem 2 Create the project network diagram. Calculate the early, late, and slack times for each activity. Identify the critical path. ID Duration Predecessor(s) A 2 B A 6 A 8 A E 18 B C-fs + 10 F D C-ff +7 G 5 F E-ff + 9 H 5 G-ss + 10 14 E G H I-ff + 5 2 15 Problem 3 Complete Network Diagram 1 and calculate the early, late, and slack times for each activity. Identify the critical path. Problem 4 Complete Network Diagram 2 and calculate the early, late, and slack times for each activity. Identify the critical path. 5