A boat, which can travel at a speed of 8 km/h in still water on a lake, is rowing in the flowing water in river. If the stream speed is 3 km/h, how fast the boat can cross a tree on the shore in traveling
upstream ?

A boat, which can travel at a speed of 8 km/h in still water on a lake, is rowing in the flowing water in river. If the stream speed is 3 km/h, how fast the boat can cross a tree on the shore in traveling downstream ?

If the speed of a boat in still water is 8 km/h and the rate of stream is 4 km/h, then find upstream speed of the boat.

When the speed of a boat in still water is 4 km/h and the rate of stream is 2 km/h, find upstream speed of the boat

A boat travels with a speed of 15km/hr in still water.If a river flowing at 5km/hr ,the boat travels some distance downstream and then returns.The ratio of average speed to the speed in still water is