A boat takes 6 hours to row 24 km downstream and 28 km downstream while...

A boat take 6 hours to travel 36 km downstream and 24 km upstream. It take 9 hours to travel 48 km downstream and 40 km upstream. Find the speed of the stream and that of boat in still water.

A boat takes 10 hours to travel 30 km upstream and 44 km downstream, but it takes 13 hours to travel 40 km upstream and 55 km downstream. Find the speed of the boat in still water and the speed of the stream.

A motorboat takes 6 hours to cover 100km downstream and 30km upstream.If the boat goes 75km downstream and returns back to the starting point in 8 hours,find the speed of the boat in still water and the speed of the stream.

A boat takes 5 hours more while going back in upstream than in downstream. If the distance between two places is 24 km and the speed of boat in still water be 5.5 km/h. What must be the speed of boat in still water so that it can row downstream, 24 km, in 4 hours?

The downstream speed of a boat is 42 km/hr and the speed of current is 3 km/hr. What is the total time (in hours) taken by the boat to cover 72 km upstream and 84 km downstream?