Pipe A can fill in 20 minutes and Pipe B in 30 mins and Pipe C can empty the same in 40 mins. If all of them work together, find the time taken to fill the tank? A. 17 1/7 mins B. 20 mins C. 8 mins D. none of these


A


Showing Answers 1 - 1 of 1 Answers

akash

  • Jun 22nd, 2006
 

ans =(1/20 + 1/30 )- 1/40

ans: a

  Was this answer useful?  Yes

Give your answer:

If you think the above answer is not correct, Please select a reason and add your answer below.

 

Related Answered Questions

 

Related Open Questions