state gov Patna High Court Assistant 2023 Mock Test Quantitative Aptitude Time and Work Pipe and Cistern
Pipe X and Z can filled a tank in 18 hours and in 4 hours. If pipe X is opened at 9:00 a.m and pipe Z is opened at 4:00 p.m, then at what time will the tank be filled.
1
6:00 pm
2
4:00 pm
3
5:00 am
4
9:00 pm