You are the project manager of the NHQ Project. You have created the project network diagram
as shown in the figure:

Based on the project network diagram, how much float is available for Activity H if Activity B is
delayed by four days and Activity D is delayed by two days?

A.
One

B.
Five

C.
Four

D.
Zero

Explanation:
The path of ABDHJ will take 21 days to complete and cannot exceed 27 days or else the project
will be late. If Activity B takes four additional days and Activity D takes two additional days, this
adds (4+2= 6) six days to the path, bringing the path’s duration to exactly (21+6 = 27) twenty
seven days. There is no available float left for Activity E or H. Float or total float (TF) is the total
amount of time that a schedule activity may be delayed from its early start date without delaying
the project finish date, or violating a schedule constraint. It is calculated by using the critical path

method technique and determining the difference between the early finish dates and late finish
dates.
Answer options A, C, and B are incorrect. There is no float available because the path’s duration
has increased to 27 days.