railway RRB Group D Mock Test Series 2024-25 Quantitative Aptitude Time and Work Pipe and Cistern

Two pipes A and B can fill a tank in 24 hours and 30 hours respectively. If both the pipes are opened simultaneously in the empty tank, how much time will be take by them to fill it?

1

13 hours 20 min

2

12 hour 10 min

3

14 hour

4

10 hour 5 min

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