A crew of 6 workers finishes a wall in 10 days. Working at the same rate, how long would 4 workers take to finish the same wall?
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Correct answer to question 10 (Arithmetic Reasoning): 15 days
Method
Fewer workers means more days, so the quantities are inversely related. The job takes 6 x 10 = 60 worker-days in total, and 60 divided by 4 workers gives 15 days.
Updated: November 2026
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