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Two inlet pipes can individually fill a cistern in \(10\) minutes and \(20\) minutes, respectively. However, it took the

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by BTGmoderatorLU » Sat Oct 03, 2026 12:59 pm
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Two inlet pipes can individually fill a cistern in \(10\) minutes and \(20\) minutes, respectively. However, it took them \(8\) minutes to fill the cistern working simultaneously, because of a leak at the bottom of the cistern. In how many minutes would the leak empty the entire filled cistern if the inlet pipes are closed?

A. \(40\) minutes
B. \(42\) minutes
C. \(46\) minutes
D. \(48\) minutes
E. \(50\) minutes

The OA is A
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