Open RFIs are 4, 8, 11, and 13 days old. What is their average age?
Correct Answer
B) 9 days
Average RFI age is (4 + 8 + 11 + 13) / 4 = 9 days.
Why This Is the Correct Answer
Average RFI age is (4 + 8 + 11 + 13) / 4 = 9 days.
Why the Other Options Are Wrong
Option A: 8 days
rfi average age, choice a: 8 days uses the wrong numerator, denominator, or percent conversion.
Option C: 10 days
rfi average age, choice c: 10 days is wrong because 10 days uses the wrong numerator, denominator, or percent conversion.
Option D: 36 days
rfi average age, choice d: 36 days uses the wrong numerator, denominator, or percent conversion.
Memory Technique
Keep a checkpoint beside RFI average age: if one number is skipped, the option drifts away from 9 days.
Reference Hint
Open Construction Jobsite Management, 5th Ed. (2024); use by topic index - documentation / submittals / RFIs / closeout to confirm that Average RFI age is (4 + 8 + 11 + 13) / 4 = 9 days.
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