AAI ATC Junior Executive 2018 Shift 3 Paper

Question : 27 of 120

Marks: +1, -0

A boat takes 0.5 h more to travel a distance of 45 km upstream than to travel the same distance downstream. If the speed of the boat in still water is 4 times the speed of the stream, then in what time will it cover a distance of 72 km downstream?