Q$2.$ The activity involved in a certain project have been identified as follows:

job time$($weeks$)$ no of men required preceding requirements

A $51$

B $101$ A

C $82$ A

D $63$ B$,$C

E $71$ B$,$C

F $42$ E

G $42$ D$,$F

H $21$ G

a$.$ For the above project draw the network $($using the MS word line function$)$ and determine the critical path.

b$.$ If there are three men available at any one time how long would the project take and how would you allocate the men to the activities?

c$.$ If there are no restrictions on the amount of labour available, explain how you would schedule the activities?