A civil foreman reviews the trench plan: a room closeout team verifies 10 rooms per day. If 104 rooms remain, how many whole days are required?
Correct Answer
C) 11 days
The calculation gives 11 days for the stated duration. Other choices: the distractors come from omitting an adjustment, using the wrong rate, or applying a rounded shortcut for calculation item 210.
Why This Is the Correct Answer
The calculation gives 11 days for the stated duration.
Why the Other Options Are Wrong
Option A: 10 days
duration, choice a: the answer choice lifts 10 days from the working line 104 / 10 = 10.4.
Option B: 12 days
duration, choice b: 12 days uses the wrong side of the schedule subtraction or omits one duration component.
Option D: 14 days
duration, choice d: 14 days uses the wrong side of the schedule subtraction or omits one duration component.
Memory Technique
Say the duration rule aloud as a chain; the chain ends at 11 days, not an intermediate stop.
Reference Hint
Open Construction Jobsite Management, 5th Ed.; use the index entry or section for "duration calculation" to confirm that The calculation gives 11 days for the stated duration.
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