please answering these questoins

Homework #12 This homework assignment is based on Swiss (2000. Chapter / - Planning Tools: PERT/CPM Application - CPM For the following problems, show the diagram with ES, EF, LS, and LF indicated on the diagram 1. Predecessors Activities A B D E F A CD E F Duration 3 5 2 2 1 + 5 2. 2. Predecessors Activities A B D E F G H A A A B,C,D E E E Duration 5 3 2 1 4 $ 6 2 3. Predecessors Activities A B D E F G H A, B, C ABC DE F G Duration 2 4 3 3 1 4 4 2 3. Predecessors Activities A B D E F G H 1 ABC A.B.C DE F G G Duration 2 4 3 3 1 4 4 2 3 Application 2 - PERT For the following problems, diagram and then show ES, EF, LS, LF, and slack on a separate table. 7. Duration 0 m Predecessors Activities A B D AB AB c 1 4 1 9 4 1 3 7 2 5 S F G H 1 J K P 15 8 15 9 26 9 11 11 40 5 13 14 6 8 9 9 2 4 9 3 5 6 D GH E, F