A cistern is filled in 16 hours but takes 4 hours longer to fill because of a leak in its bottom if the cistern is full how much hours will it take to empty ?
ans... 80 hours
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Step-by-step explanation:
If a tank takes 16 hrs to fill and due to leak it takes 4 mores hrs to fill then a full tank can be emptied by the leak in 80 hrs. Let the time taken by the leakage to empty the tank when it is full be “x” hrs. Thus, the leak takes 80 hrs to empty the tank when it is full.
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