There is a leak in the bottom of a cistern. When the cistern is thoroughly repaired, it would be filled in 3 ? hours. It now takes half an hour longer. If the cistern is full, how long will the leak take to empty the cistern? (a) 24 hours (b) 28 hours (c) 21 hours (d) 27 hours (e) None of these
7 26191Post New Bank Exams Interview Questions
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