Multiple choice

If 60 men can complete a work in 30 days working 12 hrs a day. In how many days will 90 men complete the work, working 8 hr a day?

  1. 20 days

  2. 27 days

  3. 30 days

  4. 31 days
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Total work = 60 x 30 x 12 = 21600 man-hours. For 90 men at 8 hours/day: days = 21600/(90 x 8) = 21600/720 = 30 days. Option C is correct.

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