top button
Flag Notify
    Connect to us
      Facebook Login
      Site Registration Why to Join

    Get Free Puzzle Updates

Facebook Login
Site Registration

Tap A can fill a tank in 4 hours whereas tap B and tap C can empty in 12 hours and 16 hours respectively...

+1 vote

Tap A can fill a tank in 4 hours whereas tap B and tap C can empty it in respectively 12 hours and 16 hours separately. All the 3 tap are opened with tank empty. After 2 hours tap B is closed, after how much time of closing of B, tank will be filled completely.

posted May 15, 2015 by anonymous

Share this puzzle
Facebook Share Button Twitter Share Button Google+ Share Button LinkedIn Share Button Multiple Social Share Button

1 Answer

0 votes

Considering the unit work here
part filled in 2 hours=2*[(1/4) - (1/12) -(1/16)] = 5/24

==== remaining part = 1-5/24 = 19/24

net part filled in 1 hour will be(with tank B closed) =[(1/4) - (1/16)]=3/16

=== 3/16 part == 1hour

==== 19/24 part == (16/3)*(19/24) = 38/9 = 4.22 hrs

answer May 15, 2015 by Ankit Kamboj

Similar Puzzles
+2 votes

A cistern has three pipes A, B and C. The pipes A and B can fill it in 4 and 5 hours respectively and C can empty it in 2 hours. If the pipes are opened in order at 1, 2 and 3 am respectively..
When will the cistern be empty?

+2 votes

A tank can be filled by the Tap A in 4 Hrs and by Tap B in 6 Hrs. The same tank can be emptied by the Tap C in 8 Hrs. Now suppose we keep all three taps on then how much time it will take to fill?

0 votes

Three tank A , B and C are connected to a tank either to fill or empty the tank . All three together can fill the tank in 8 minutes whereas only A and B can fill it in 12 minutes . In a particular day all the three taps are used to fill the tank , they all are opened for 4 minutes , then A is closed , remaining 2 works for next 2 minutes then B is closed . Finally C fill the tank in 1 minute .
In how much time tap B alone can fill the tank ?

0 votes

Pipe A can fill a cistern in 4 hours while pipe B can empty it in 6 hours. If both of them are opened together at the same time when the tank is empty, then how many hours would be taken by them to fill it?

0 votes

3 pumps, working 8 hours a day, can empty a tank in 2 days. How many hours a day must 4 pumps work to empty the tank in 1 day?

Contact Us
+91 9880187415
#280, 3rd floor, 5th Main
6th Sector, HSR Layout
Karnataka INDIA.