top button
Flag Notify
    Connect to us
      Facebook Login
      Site Registration

Facebook Login
Site Registration

Then what will be the minimum hours taken by the second tap to drain this tank ?

0 votes

Three taps together drains a tank in 5 hours.
If first tap drains this tank in 10 hours alone.
Then what will be the minimum hours taken by the second tap to drain this tank ?

posted Dec 24, 2014 by Madhavi Latha

Share this puzzle
Facebook Share Button Twitter Share Button LinkedIn Share Button

1 Answer

+1 vote

Answer: 10 Hrs

Amount of water drained by three taps = 1/5 = 0.2 i.e 20%
Amount of water drained by 1st tap = 1/10 = 0.1 i.e 10%
let x and y be time taken by 2nd and 3rd tap respectively,

==> 1/x + 1/y + 0.1 = 0.2
1/x + 1/y = 0.1
if we assume 3rd tap drains neglegible amount of water,
then, 1/x = 0.1 ==> x = 10 hrs

answer Dec 24, 2014 by Shashi Kant

Similar Puzzles
+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

A tap can fill a tank in 30 minutes, another tap can fill it in 1.5 hours.
If both the taps are opened at 11.40 am.
At what time will the tank be filled?

0 votes

There is a large fresh water reservoir that has two distinct drainage systems - small pipe and large pipe.

Six large pipes can drain the reservoir completely in exactly 12 hours while six small pipes will take 18 hours to drain the reservoir.

Can you calculate the time that will be taken by 6 large pipes and 6 small pipes together to drain the reservoir?

+1 vote

If 9 boy working 15/2 hours a day can finish a work in 20 days, then how many days will be taken by 12 boy working 6 hours a day to finish the work, it being given than 3 boy of latter type work as much as 2 boy of he former type in the same.

0 votes

A tank can be filled by one tap 20 minute and by another 25 minute. Both the taps are kept open for 5 minute and then second is turned off. In how many minute more is the tank completely filled.

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