A tank is completely filled in 16 hours but takes four hours more to fill because of a leak in the bottom of the bank. What time will the leak take to empty the completely filled tank ?

A tank is completely filled in 16 hours but takes four hours more t

1.	A tank is completely filled in 16 hours but takes four hours more to fill because of a leak in the bottom of the bank. What time will the leak take to empty the completely filled tank ?
A.	70 hrs
B.	75 hrs
C.	80 hrs
D.	85 hrs
Answer» D. 85 hrs

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A tank is completely filled in 16 hours but takes four hours more to fill because of a leak in the bottom of the bank. What time will the leak take to empty the completely filled tank ?

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