How Long will 28 men, Working 12 Hours a Day, Take to Complete the Work?

16 men are able to complete a piece of work in 12 days working 14 hours a day. How long will 28 men, working 12 hours a day, take to complete the work?

  1. 7 days
  2. 10 days
  3. 8 days
  4. 6 days
Anurag Mishra Professor Asked on 7th October 2015 in Maths.
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  • 1 Answer(s)

    Answer: (3) 8 days

    Explanation:-
    Formula-
    M1D1H1 = M2D2H2
    Where, M = number of men, D = number of days and H = number hours.

    Given,
    M1 = 16, D1 = 12, H1 = 14, M2 = 28, H2 = 12 and D2 = ?

    Then, 16 x 12 x 14 = 28 x 12 x D2
    D2 = 16 x 12 x 14 /28 x 12
    = 16/2
    = 8 days
    Then, 28 men working 12 hours a day, take to complete the work in 8 days.

    Hence, the answer is (c) 8 days.

    Anurag Mishra Professor Answered on 7th October 2015.
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