Question

Construction of the cattery could be distilled to eight distinct steps, from the official groundbreaking ceremony to the cutting of the litterbox ribbon. The activities, their durations and predecessors are shown in the table below. Use this scenario to answer the following question(s).

Activity	Predecessors	Time (weeks)
A	--	10
B	A	8
C	A	7
D	C	11
E	D	12
F	B	11
G	E, F	6
H	E, F	9

Refer to the scenario above. Which of these activities has the least slack?

Answer 1

Slack represents the amount of time a task or activity can be delayed without affecting the project deadline.

Slack = Smallest of {Late Finish - Early finish} and {Late Start -Early start}

Let us now look at the precedence diagram for the above chart:

Results:

Slacks of Activity A,C,D,E, and H has a slack '0'

The critical path has zero slack. Hence, all the activities A,C,D,E and H lie on Critical path (as shown in red line in precedence diagram)