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 4
For the Oak Point water storage yard, a civil analyst preparing an operations handoff review schedules 760 units of work with 5 crews, each producing 70 units/day. What duration is required?
- A1.28 days
- B2.35 days
- C2.17 days
- D2.81 days
Show the answer and worked solution
Answer: C — 2.17 days
Worked solution
- Step 1. Divide total work by combined production
duration = work/(crews x production)
duration = 760/(5 x 70) = 2.17 days
Why the other choices are wrong
- Choice A
- This total falls short of 760/(5 * 70), 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.
- Choice B
- No isolated arithmetic slip in dividing the total quantity by the combined crew output accounts for a duration this much larger; carrying out 760/(5 * 70) returns the smaller figure that the crew and production data support.
- Choice D
- No single clean misstep in dividing the total quantity by 5 crews times 70 units per day produces this moderately high figure; the direct division returns a smaller duration that matches the stated crew and production data.