# What is the total time required to make the tank empty ?

121 views

A tank contains 1 litre of water. Water is falling drop wise from the tank. Radius of the drop is 2 mm. If every drop takes 1 sec to fall from the tank.
What is the total time required to make the tank empty ?

posted Jan 2, 2015

1 l= 1000 000 mm3
1 drop volume = 4/3*2^3*pi=33.51 mm3
number of drops= 1000 000/33.51~29841
time to empty the tank = 29841/3600 seconds ~8. 29 hours ~ 8 hours 17 mins

Similar Puzzles

A Tank with a leak in the bottom is filled in 15 hours and without leak it could have been filled in 12 hours. How much time it will take the leak to empty the tank?

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?

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?