Question

A pipe can fill a tank in 9 hours due to a leak in its bottom of the tank fills up in 10 hours if the tank is full,in how much time will it be emptied by the pipe? ​

Answer 1

Answer:

As per the question

1/9 - 1/t = 1/10

1/t = 1/9 - 1/10

1/t = 1/90

Required Time = 90 minutes