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Question

Pipe M can fill a tank in 80 minutes while pipe N can fill the same tank in 120 minutes. If pipe M and N are opened simultaneously, then after how much time must pipe M be closed so that the whole tank is filled in 60 minutes?

A 144 min

B 200 min

C 90 min

D 120 min

E None of these

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Relevant for Exams:

IIFCL Grade A/B

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