other govt exam NBE Junior Assistant 2024 Mock Tests Series Quantitative Aptitude Time and Work Pipe and Cistern
Pipes A and B can fill an empty cistern in 16 minutes and 32 minutes, respectively. Both Pipe A and Pipe B are opened together. After how much time should Pipe A be turned off so that the empty cistern is completely filled in a total of 16 minutes?
1
9 min
2
7 min
3
6 min
4
8 min