Joe's radio tower fabrication company has developed the following milestone project schedule. What is the expected time duration for the project?
ACTIVITY PRECEDENCE P M O
A Complete design None 4 3 2
B Develop BOM A 2 1 1
C Order Materials B 3 2 1
D Site Selection A 7 4 3
E Receive Materials C 6 3 2
F Obtain permits A, D 4 2 1
G Begin fabrication facility development E, F 6 5 3
a) 9
b) 10
c) 14
d) 14.33
e) 17.33
f) 21
Answer: d