IBPS PO RRB PO Prelims 5 Aug 2023 Shift 3 Paper

A boat P covers a distance 40 km downstream in 2 hrs and 20 km upstream in 2 hrs. One day boat P is downstream and another boat Q comes from the opposite direction at a distance of 90 km. The speed of the boat Q in still water is double the speed of boat P in still water. After how many minutes both the boats will meet if they start together?