A cistern is fille in 8 hours and it takes 12 hours when there is a leak in its bottom. If the cistern is full, in what time shall the leak empty it?

A cistern is fille in 8 hours and it takes 12 hours when there is a

1.	A cistern is fille in 8 hours and it takes 12 hours when there is a leak in its bottom. If the cistern is full, in what time shall the leak empty it?
A.	22 hours
B.	21 hours
C.	24 hours
D.	23 hours
Answer» D. 23 hours

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A cistern is fille in 8 hours and it takes 12 hours when there is a leak in its bottom. If the cistern is full, in what time shall the leak empty it?

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