In How Many days B Alone can do it? If

A and B can together do a piece of work in 18 days and A alone can do it in 36 days. In how many days B alone can do it?

  1. 35 days
  2. 25 days
  3. 36 days
  4. 39 days
Abdul Salam Newbie Asked on 6th August 2015 in Maths.
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1 Answer(s)

Answer: (3) 36 fays

Explanation:-
A and B can together do a piece of work = 18 days
A and B can together do a piece of work in a day = 1/18

A alone can do it = 36 days
A alone can do work in a day = 1/36

B alone can do the work in a day = 1/ 18 – 1/36
= (2 – 1) /36
= 1/36
Then, B can complete the work = 36 days.

Hence, the answer is (3) 36 days.

Anurag Mishra Professor Answered on 7th August 2015.
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