A complex project has multiple critical paths with durations of 180, 185, and 190 days respectively. The project experiences a 3-day delay on the path with 185-day duration. What is the new project duration?
Correct Answer
C) 190 days
The project duration is determined by the longest path. The 190-day path remains the critical path, so the project duration stays at 190 days since the delayed path (188 days) is still shorter.
Why This Is the Correct Answer
CORRECT_ANSWER - In project management, the overall project duration is always determined by the longest critical path. Even though the 185-day path experienced a 3-day delay making it 188 days, the 190-day path remains unchanged and is still the longest. Since 190 days > 188 days > 180 days, the project duration remains 190 days.
Why the Other Options Are Wrong
Option A: 185 days
185 days represents the original duration of the delayed path, but this ignores both the delay that occurred and the fact that there's a longer 190-day path that determines the overall project duration.
Option B: 188 days
188 days is the new duration of the delayed path (185 + 3), but this path is still not the longest path in the project, so it doesn't determine the overall project duration.
Option D: 193 days
193 days incorrectly adds the 3-day delay to the longest path (190 + 3), but the delay occurred on the 185-day path, not the 190-day path.
Memory Technique
Remember 'LPR' - Longest Path Rules. The project is only as fast as its slowest (longest) path, just like a chain is only as strong as its weakest link.
Reference Hint
Look up 'Critical Path Method (CPM)' and 'Project Scheduling' in construction management or project management chapters
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