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 ?

A cistern which could be filled in 9 hours takes one hour more to be f

1.	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 ?
A.	80 hours
B.	85 hours
C.	90 hours
D.	95 hours
Answer» D. 95 hours

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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 ?

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