To keep costs at a minimum and decrease the completion time by 1-1/2 days, Networks, Inc. should crash activity(ies):
A. AD
B. DE
C. AB and CE
D. AD and AB
Answer:D
To keep costs at a minimum and decrease the completion time by 1-1/2 days, Networks, Inc. should crash activity(ies):
A. AD B. DE C. AB and CE D. AD and AB
Explanation: The critical (longest) path is A-D-E, which has an expected time of 13 days (5.5 + 7.5). However, to decrease the project's completion time by 1.5 days, paths A-B-C-E (4.5 + 1.0