How Many Days Requires for B to Finish The Work ? If

A and B together can do a piece of work in 6 days. If A can alone do the work in 18 days, then the number of days required for B to finish the work is

  1. 9
  2. 15
  3. 12
  4. 10
Anurag Mishra Professor Asked on 12th August 2015 in Maths.
Add Comment
1 Answer(s)
Best answer

Answer: (1) 9 days

Explanation:-
A and B together can do a piece of work = 6 days
Therefore, A and B can do a piece of work in a day = 1/6

A can alone do the work = 18 days
A can alone do work  in a day = 1/18

Then, B can alone do work in a day = 1/6 – 1/18
= (3 – 1)/18
= 2/18
= 1/9
Therefore, B can alone finish the work = 9 days

Hence, the answer is (1) 9 days.

Anurag Mishra Professor Answered on 13th August 2015.
Add Comment

Your Answer

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