IBPS RRB PO Prelims 4 Aug 2024 Shift 1 Paper

Question : 64 of 80

Marks: +1, -0

Two pipes A & B can separately fill a tank in 6 hours and 8 hours respectively. Both the pipes are opened together but pipe B is turned off after 2 hours and 30 minutes. In how much time the tank will be filled completely?