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Question

For a particular project, eight activities are to be carried out. Their relationships with other activities and expected durations are mentioned in the table below.

Activity Predecessors Duration (days)
a - 3
b a 4
c a 5
d a 4
e b 2
f d 9
g c, e 6
h f, g 2

If duration of activity f is changed to 10 days, then the critical path for the project is

A
Critical path remains the same and the total duration to complete the project changes to 19 days.
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B
Critical path changes and the total duration to complete the project changes to 17 days.
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C
Critical path changes but the total duration to complete the project remains the same.
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D
Critical path and the total duration to complete the project remains the same.
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Solution

The correct option is A Critical path remains the same and the total duration to complete the project changes to 19 days.


Critical path adfh=19 days

So, when the duration of activity, f is changed from 9 to 10 days, the critical path remains the same and the project duration will increase to 19 days.

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