In how many days they can complete work together. If

A, B and C can complete a piece of work I 24,5 and 12 days respectively. Working together, they well complete the some work in:

  1. 4 days
  2. 1/24 days
  3. 7/24 days
  4. 24/7 days
Monis Rasool Professor Asked on 21st November 2015 in Maths.
Add Comment
  • 1 Answer(s)

    All options are wrong.
    Correct  Answer: 40/13 days

    Explanation:-
    A can complete a piece of work = 24 days
    Therefore, he can a piece of work in a day = 1/24

    B can complete the same work = 5 days
    Therefore, he can the same work in a day = 1/5

    C can complete the same work = 12 days
    Therefore, he can the same work = 1/12

    A , B and C can together the same work = 1/24 + 1/5  + 1/12
    = (5 + 24 + 10)/120
    = 39/120
    = 13/40

    So, A, B and C  can together complete the same work = 40/13 days.

    Hence, the answer is 40/13 days.

    Anurag Mishra Professor Answered on 22nd November 2015.
    Add Comment
  • Your Answer

    By posting your answer, you agree to the privacy policy and terms of service.