2 years ago in Time and Work

A tank can be filled with water by two pipes A and B together in 36 minutes. If the pipe B was stopped after 30 minutes, the tank is filled in 40 minutes. The pipe B can alone fill the tank in:

[A] 45 minutes
[B] 60 minutes
[C] 75 minutes
[D] 90 minutes
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Ramakrishna Raju
Ramakrishna Raju - 7 months ago

Ramakrishna Raju is saying 60 minutes is correct answer

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