9. Pipe A can fill a cistern in 6 hours and pipe B can fill It in8 hou – InterviewSolution

1.	9. Pipe A can fill a cistern in 6 hours and pipe B can fill It in8 hours. Both the ptpes are orpand after two hours, pipe A is closed. How much time will B take to fill the remainingthe tank?1 1 7
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