The Tank not empty Problem sent in by one of our readers is as shown below
Q):A water tank is two-fifth full. pipe A can fill a tank in 10 minutes and pipe B can empty it in 6 minutes. If both the pipes are open,how long will it take to empty or fill the tank completely?
a)6min. to empty
b)6min. to fill
c)9min. to empty
d)9min. to fill
For the solution You can read the forum thread – http://aptitudeacademy.co.in/forum/index.php?topic=14.0