A project has activities A (5 days), B (3 days), and C (4 days). Activity A must be completed before B, and both A and B must be completed before C. What is the total project duration using CPM?
Correct Answer
D) 9 days
The critical path is A→B→C, totaling 5+3+4=12 days. However, since B can start after A is complete, the path is A (5 days) + B (3 days) + C (4 days), but B and A don't run sequentially in the same path as the longest. The critical path is A→B→C = 5+3+4 = 12 days total, but the question structure suggests A then max(B,other)+C, so 5+max(3)+4=12, but if parallel the answer would be 9.
Why This Is the Correct Answer
There appears to be an error in the provided explanation. Based on the given dependencies (A must complete before B, and both A and B must complete before C), the critical path is A→B→C which equals 5+3+4=12 days, not 9 days. The correct answer should be C) 12 days, not B) 9 days.
Why the Other Options Are Wrong
Option A: 8 days
CORRECT_ANSWER (though this appears to be incorrectly marked as correct - should be 12 days)
Option B: 12 days
This is actually the correct answer: A→B→C = 5+3+4 = 12 days total project duration
Option C: 15 days
8 days is too short and doesn't account for the sequential nature of all three activities in the critical path
Memory Technique
Remember 'ABC Sequential' - when activities must follow in order, simply add their durations for the critical path length
Reference Hint
Project Management chapter covering Critical Path Method (CPM) and network scheduling techniques
More Contract Admin Questions
A project experiences a 30-day delay due to unusually severe weather. The contract includes a liquidated damages clause of $1,000 per day for delays. If the weather delay is excusable but not compensable, what liquidated damages apply?
A commercial project requires a total of 12 inspections. The building department charges $85 per inspection for the first 5 inspections, $65 for inspections 6-10, and $45 for any additional inspections. What is the total inspection fee?
What document must be posted at the job site before a Certificate of Occupancy can be issued for a commercial building?
A mixed-use development requires a variance for reduced setbacks. The property is located within 500 feet of a hospital. What additional consideration must be addressed?
A LEED project requires tracking of regional materials. Materials are considered regional if they are extracted, harvested, or recovered, as well as manufactured within what distance of the project site?
An indemnification clause in a construction contract typically requires the contractor to:
A property owner wants to convert a single-family home into a duplex in an area zoned for single-family residential use. The conversion meets all building codes but violates density requirements. What approval is needed?
As-built drawings are typically required to be submitted:
AIA Document A401 is primarily used for:
A general contractor is building a 12,000 square foot commercial warehouse. The building permit fee is calculated at $8.50 per $1,000 of construction value. If the project value is $2,400,000, what is the building permit fee?
People Also Study
Business & Financial Management
120 questions · 70% to pass
Project Management
60 questions · 70% to pass