A crew has 960 units remaining and averages 120 units per day. How many workdays are needed?
Correct Answer
D) 8 workdays
The remaining duration is 960 units / 120 units per day = 8 workdays.
Why This Is the Correct Answer
The remaining duration is 960 units / 120 units per day = 8 workdays.
Why the Other Options Are Wrong
Option A: 6 workdays
remaining work duration, choice a: 6 workdays is wrong because 6 workdays uses the wrong side of the schedule subtraction or omits one duration component.
Option B: 10 workdays
remaining work duration, choice c: 10 workdays uses the wrong side of the schedule subtraction or omits one duration component.
Option C: 12 workdays
remaining work duration, choice d: 12 workdays is wrong because 12 workdays uses the wrong side of the schedule subtraction or omits one duration component.
Memory Technique
Picture a release point labeled remaining work duration: finish every operation before accepting 8 workdays.
Reference Hint
Open Construction Jobsite Management, 5th Ed. (2024); use by topic index - duration / float / baseline / updating / variance to confirm that The remaining duration is 960 units / 120 units per day = 8 workdays.
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