A cistern which could be filled in 9 hours takes one hour more to be filled owing to a leak in its bottom. If the cistern is full, in what time will the leak empty it?

Question

Accepted Answer

Let the leak empty the full cistern in N hours Now, applying the given rule (9 x N) / (N - 9) = 9 + 1 or N = 90 hours.

A cistern which could be filled in 9 hours takes one hour more to be filled owing to a leak in its bottom. If the cistern is full, in what time will the leak empty it?

Discussion & Comments