Multiple choice

24 men working at 8 hours a day can finish a work in 10 days. Working at a rate of 10 hours a day, the number of men required to finish the same work in 6 days is

  1. 30

  2. 32

  3. 34

  4. 36
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Total work = 24 men × 8 hours/day × 10 days = 1920 man-hours. Required: complete in 6 days at 10 hours/day. Men needed = 1920 ÷ (6 × 10) = 1920 ÷ 60 = 32 men. Option A (30): would give 1800 man-hours, insufficient. Option C (34): would give 2040 man-hours, more than needed. Option D (36): would give 2160 man-hours.

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