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Quantitative Aptitude :: Pipes & Cistern - Discussion

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Choose the correct option.

A cistern can be filled by a tap in 4 hours while it can be emptied by another tap in 9 hours. If both taps are opened simultaneously, then after how much time will the cistern get filled ?

A5 hours

B4.5 hours

C7.2 hours

D6.5 hours

Answer: Option (Login/Signup)

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Asked In :: Wipro Global Edge

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