Practice Boat and Stream Practice Questions with Detailed Solutions – Level 3

A motorboat covers 40 km downstream and 24 km upstream in 5 hours 30 minutes. It covers 60 km downstream and 30 km upstream in 7 hours 30 minutes. What is the speed of the stream?

Ramesh can row at 15 km/h in still water. The river flows at 3 km/h. He takes 5 hours to row to a place and come back. How far is the place?

The speed of a stream is 4 km/h. A man takes time in the ratio \(5 : 3\) to row a certain distance upstream and the same distance downstream. How far can he row downstream in 2 hours 15 minutes?

A boat makes a round trip between two ghats on a river flowing at 5 km/h. Its average speed for the entire round trip is 24 km/h. What is the speed of the boat in still water?

A boat goes 30 km upstream and 44 km downstream in 10 hours. It goes 40 km upstream and 55 km downstream in 13 hours. What is the speed of the boat in still water?

A launch moves at 14 km/h in still water. It travels 80 km downstream while the river flows at 2 km/h. On the return journey, heavy rain raises the stream speed to 4 km/h. What is the total time taken for the journey?

Suresh rows to a place 30 km away and comes back in 8 hours. He finds that he can row 5 km downstream in the same time as he rows 3 km upstream. What is the speed of the stream?

A boat whose speed in still water is 10 km/h takes 1 hour more to cover 24 km upstream than to cover the same distance downstream. What is the speed of the current?

A man rowing upstream drops his cap into the river. He notices it 15 minutes later, turns back immediately and rows downstream at the same rowing effort. He picks up the cap 1.5 km downstream from the point where it fell. What is the speed of the river?

The ratio of the speed of a boat in still water to the speed of the stream is \(5 : 2.\) The boat covers 42 km downstream in 3 hours. How long will it take to cover 27 km upstream?