state gov Allahabad High Court Group D Mock Test Series 2024 Quantitative Aptitude Time and Work Pipe and Cistern
Tank 'A' is two-fifths full. Pipe P can fill it in 10 minutes while pipe Q can empty it in 6 minutes. In what time will the tank get empty, if both P and Q are opened?
1
7 minutes
2
6.5 minutes
3
6 minutes
4
5.5 minutes