Learn and practice Problems on boats and streams with easy explaination and shortcut tricks. All questions and answers on number covered for various Competitive Exams

## Solve Problems:

1) The speed of a boat in still water is 5km/hr. If the speed of the boat against the stream is 3 km/hr, what is the speed of the stream?

- 1.5 km/hr
- 2 km/hr
- 2.5 km/hr
- 1 km/hr

2) A man rows downstream at 20 km/hr and rows upstream at 15 km/hr. At what speed he can row in still water?

- 17.5 km/hr
- 18 km/hr
- 20.5 km/hr
- 22 km/hr

3) A man swims 12 km downstream and 10 km upstream. If he takes 2 hours each time, what is the speed of the stream?

- 1 km/hr
- 0.5 km/hr
- 1.5 km/hr
- 0.7 km/hr

4) A boat covers 800 meters in 600 seconds against the stream and returns downstream in 5 minutes. What is the speed of the boat in still water?

- 1 m/s
- 1.5 m/s
- 2 m/s
- 2.5 m/s

5) A man can row a boat at a speed of 20 km/hr in still water. If the speed of the stream is 5 km/hr, in what time he can row a distance of 75 km downstream?

- 1.5 hours
- 2 hours
- 2.5 hours
- 3 hours

6) A man swimming in a river which is flowing at 3 km/hr finds that in a given time he can swim twice as far downstream as he can swim upstream. What will be his speed in still water?

- 9.5 km/hr
- 10 lm/hr
- 10.5 km/hr
- 11 km/hr

7) A man can row at 12 km/hr in still water. He finds that he takes twice as much time to row upstream than to row downstream when he covers a certain distance. Find the speed of the stream.

- 4 km/hr
- 3 km/hr
- 4.5 km/hr
- 3.5 km/hr

8) A boat takes 6 hours to move downstream from point P to Q and to return to point P moving upstream. If the speed of the stream is 4 km/hr and speed of the boat in still water is 6 km/hr, what is the distance between point P and Q?

- 8 km
- 9 km
- 10 km
- 11 km

9) A man can swim in still water at 8 km/hr. If the river is flowing at 2km/hr he takes 80 minutes to reach a place and return back, how far is the place?

- 4 km
- 3 km
- 4.5 km
- 5 km

10) A motorboat travels 16 km in 2 hours against the flow of river and travels next 8 km along the flow of the river in 20 minutes. How long will it take motorboat to travel 48 km in still water?

- 2.5 hours
- 3 hours
- 3.5 hours
- 4 hours