A recovery plan adds 3 workers for 5 days at 8 hours per day. How many added labor-hours are planned?
Correct Answer
B) 120 labor-hours
Added labor-hours are 3 workers x 5 days x 8 hr/day = 120 labor-hours.
Why This Is the Correct Answer
Added labor-hours are 3 workers x 5 days x 8 hr/day = 120 labor-hours.
Why the Other Options Are Wrong
Option A: 40 labor-hours
acceleration labor hours, choice a: 40 labor-hours equals 5 x 8. That multiplies those two listed numbers.
Option C: 80 labor-hours
acceleration labor hours, choice c: 80 labor-hours backs into 10 when divided by 8; the accepted setup gives 15 on that same base.
Option D: 160 labor-hours
acceleration labor hours, choice d: 160 labor-hours backs into 20 when divided by 8; the accepted setup gives 15 on that same base.
Memory Technique
Say the acceleration labor hours rule aloud as a chain; the chain ends at 120 labor-hours, not an intermediate stop.
Reference Hint
Open Construction Jobsite Management, 5th Ed. (2024); use by topic index - duration / float / baseline / updating / variance to confirm that Added labor-hours are 3 workers x 5 days x 8 hr/day = 120 labor-hours.
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