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By Mathematics Mcqs Pipes and Cisterns No Comments

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. 45 hrs
B. 60 hrs
C. 75 hrs
D. 90 hrs

Explanation:

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1/9 – 1/x = 1/10

=> 90 hrs

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