A stone splash has 36 device boxes, and each extension takes 7 minutes. How many labor hours are needed?
Correct Answer
B) 4.2 hours.
The work time is 36 x 7 = 252 minutes. Since 60 minutes equal 1 hour, 252 / 60 = 4.2 hours.
Why This Is the Correct Answer
The work time is 36 x 7 = 252 minutes. Since 60 minutes equal 1 hour, 252 / 60 = 4.2 hours.
Why the Other Options Are Wrong
Option A: 3.5 hours total.
3.5 hours total. is below the supported result for electrical finish labor calculation; it likely skips a premium-pay or employer-cost component.
Option C: 4.6 hours total.
4.6 hours total. is above the supported result for electrical finish labor calculation; it likely pays the wrong premium tier or counts the same hours twice.
Option D: 5.0 hours total.
5.0 hours total. is above the supported result for electrical finish labor calculation; it likely pays the wrong premium tier or counts the same hours twice.
Memory Technique
Scheduling Backsplash payroll: time, premium, reimbursement, proof in separate buckets.
Reference Hint
Study anchor (closed-book): memorize Electrical finish labor calculation from California Electrical Code, California Code of Regulations Title 24. / Title 24 California Electrical Code boxes at finished surfaces; know the rule or calculation trigger without relying on exam-room lookup.
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