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

1.	A cistern which could be filled in 9hours 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.	70hours
B.	80hours
C.	90hours
D.	100hours
Answer» D. 100hours

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A cistern can be filled in 9 hours but due to a leak at its bottom it takes 10 hours. If the cistern is full, then the time that the leak will take to make it empty will be ?

A cistern which could be filled in 9hours 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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