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.
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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.
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