project network; compute the early, late, and slack activity

times (10 points); determine the planned project duration; and identify the critical path. (10 points) His assistant has collected the following information for the Color Printer Drivers Software. (Total 15 points)

ID    Description       Predecessor  Time
A    External specifiation  None      8
B     Review design features A        2
C    Document new features A        3
D    Write software       A       3
E     Program and test    B       40
F     Edit and publish notes  C       2
G      Review manual     D       2
H      Alpha site        E,F      20
I       Print manual      G       10
J       Beta site         H.I      10
K       manufacture     J        12
L       Release and ship    K       3

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