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Practice Test Discussion
Two pipes A and B can fill a tank in 12 and 16 min respectively. If both the pipes are opened together, then calculate the time after which B should be closed, so that the tank is full in 9 minutes.
According to the formula, If Two pipes A and B can fill the tank in x and y min respectively. If both pipes are opened together, then the time after which pipe B should be closed so that the tank is full in t min is min.
The tank will be filled in 4 min both the pipes are opened simultaneously.