In How Many More Days is the Work Completed? If

20 men can do a piece of work in 18 days. They worked together for 3 days, then 5 men joined them. In how many more days is the work completed?

  1. 12
  2. 14
  3. 15
  4. 13
Monis Rasool Professor Asked on 8th July 2015 in Maths.
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1 Answer(s)

Answer: (1) 12 days
Explanation:-
20 men can do piece of work = 18 days
20 men can do work in a day = 1/18
Therefore,  20 men can do work in 3 days = 3/18 = 1/6
Remaining work = 1 – 1/6 = 5/6
5 men joined them
Then, the number of men = 20 + 5 = 25
25 men can do work in a day = 6 x 25/18 x 20 x5 = 1/12
25 men can do work complete =  12 days
Hence, the answer is (1) 12 days.

Anurag Mishra Professor Answered on 8th July 2015.
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