Original question written by FE Exam AI Prep from the public FE Civil exam specification. Before release, a solver model re-derived the answer twice from the question alone, without its answer key, and a critic model checked the result, and the arithmetic was re-run as an executable calculation. No licensed engineer reviews these questions. It is not an NCEES question and does not come from any NCEES practice exam. FE Exam AI Prep is an independent study tool and is not affiliated with, endorsed by, or sponsored by NCEES.
EASYduration = quantity/rate
Activity Duration from Production Rate: FE Civil practice problem 2
For the Oak Point bridge widening, a civil analyst preparing an asset management screening schedules 920 units of work with 5 crews, each producing 50 units/day. What duration is required?
- A4.10 days
- B3.68 days
- C4.35 days
- D5.42 days
Show the answer and worked solution
Answer: B — 3.68 days
Worked solution
- Step 1. Divide total work by combined production
duration = work/(crews x production)
duration = 920/(5 x 50) = 3.68 days
Why the other choices are wrong
- Choice A
- Computing 920/(5 * 50) directly gives a smaller duration than this total, and no single dropped or duplicated step in the work-over-crew-output division explains a figure this much larger, so the smaller result from that direct division is the one the data supports.
- Choice C
- Carrying out 920/(5 * 50) gives a duration modestly below this total, and no single isolated slip in that division accounts for the extra amount, so the smaller figure is the one the crew data supports.
- Choice D
- This total falls short of 920/(5 * 50), and the shortfall is not traceable to one clean arithmetic slip in the work-over-crew-output division, so the larger duration from that direct calculation is the one the data supports.