how to do this question ?

Q3. A new project related to a new machine part development has been assigned to you. The details of the activities are summarized in Table Q3(a). As a project manager, you are required to perform the following tasks: (a) Illustrate the network diagram in Activity on Node (AON) with Early Start Time and Late Start Time and, ) (6) determine the critical path and the paths duration. (c) The 4 days duration in Activity G is an assembly process without time allowance for learning process. This project required to produce 10 units. Factory manager suggested you to include learning rate of 70% in Activity G. Assume the first unit required 1 day for assembly. Determine the total time needed to assemble the 10 units in activity G and, (d) determine the updated critical path's duration. Table Q3(a): Activities of new machine part development Activity Predecessors Duration (days) A 2 B 1 A,B 3 D 4 E D 5 F D 4 G F 4 H G 2