Trains, Boats and Streams

A speedboat runs 6 km upstream in a river and comes back to the starting point in 33 minutes. The stream of the river is running at 2 km/hr. What is the speed of speedboat in still water?

A boat runs at the speed of 13 km/h in still water. If the speed of the stream is 4 km/h, how much time will it take to go 68 km downstream?

Peter's speedboat run at a speed of 9 km/h in still water. He rows to a place at a distance of 105 km and comes back to the starting point. If the speed of stream is 1.5 km/h, find out the time taken by Peter.

A motorboat crosses a certain distance in 1 hour and comes back in 1½ hours. If the stream is running at 3 km/h, find out the speed of motorboat in still water.

A boat can travel 12 km downstream in 1 hour and return upstream in 3 hours. What is the speed of the boat in still water?

A boat goes downstream from point A to point B in 4 hours and returns upstream in 6 hours. If the speed of the stream is 3 km/h, what is the speed of the boat in still water?

A boat takes 3 hours to travel 36 km downstream and 6 hours to travel the same distance upstream. Find the speed of the boat in still water and the speed of the stream respectively.

Shiva rows a boat at 8 km/h in still water. He finds that it takes him 5 hours longer to row upstream than downstream for a certain distance. If the speed of the stream is s km/h, and the distance is 40 km, find s.

Two boats, P and Q, start from two points 160 km apart and move towards each other. Boat P’s speed in still water is 18 km/h and boat Q’s speed in still water is 16 km/h. If the speed of the stream is 2 km/h and P is moving downstream while Q is moving upstream, after how many hours will they meet?

A boat’s speed in still water is 5 km/hr. While river is flowing with the speed of 2 km/hr. and time taken to cover a certain distance upstream is 2 hr more than time taken to cover the same distance downstream. Find the distance.