Question

Activity
Immediate Predecessor(s)
Estimated Duration (days)
A
10
B
15
C
A.
2.
B
12
E
C,D
14
F
B
8
G
D, F
15
E
10
I
E, G
6
-
F, I
9​

Answer 1

Explanation:

Develop a network diagram for the project specified below:

Activity

Immediate

Predecessor

Activity

A -

B A

C, D B

E C

F D

G E, F

Solution

Activity A has no predecessor activity. i.e., It is the first activity. Let

us suppose that activity A takes the project from event 1 to event 2. Then

we have the following representation for A:

For activity B, the predecessor activity is A. Let us suppose that B

joins nodes 2 and 3. Thus we get

1 2 3

Activities C and D have B as the predecessor activity. Therefore we

obtain the following: