solving by hand

(a) In CPM, explain what is meant by the following: (1) Earliest time (ii) latest time (iii) - 1 e starting critical path. ending (b) Tasks A, B, ..., H, I, constitute a project, in which their sequences are as follows: beyond A precedes D and E; B precedes FC precedes G and H: D precedes F. F precedes I; G precedes 1. Draw a graph to represent the sequence of the tasks. (c) The completion times (in days) of each of the above tasks are given in the following table. Task Time A 8 B 10 8 D 10 E 16 F 17 H 14 1 9 18 (1) Find the critical path and completion time of the project. (ii) Find the critical tasks of the project. (iii) Of the tasks that are not critical, find how long each can be delayed without delaying the completion of the project