Question
A Swimmer Walks 45km along the river's flow in 3 hours 45 minutes and walks 15km against the flow in 2 hours 30min. Find the speed of the boat in Still Water and the Speed of flow.
Solution
Let the speed of boat in still water =B and speed of stream =S then – ATQ- 
B-S =6            … (2) Solving (1) +(2) 2B =18 B=9km/h and S=3km/h.
More Boats and streams Questions
- Speed of current is equal to 35% of speed of boat in still water. If the boat takes 7 hours to cover 140 km in still water, then find the time taken by the...
- The ratio of the speed of boat ‘A’ in still water, the speed of boat ‘B’ in still water and the speed of the current is 8:5:2, respectively. If the time ta...
- The speed of the boat upstream and downstream are in the ratio of 3:4. If the boat covers a distance of 147 km in still water in 7 hours, determine the spe...
- The ratio of the speed of a launch in still water to the speed of the stream is 8 : 1. If the speed of the launch is increased by 25%, it takes 5 hours to ...
- A boat takes 24 hours to cover 'q' km in still water. While traveling downstream, it takes 16 hours to cover (q - 80) km. If the speed of the boat in still...
- Speed of boat is 25 km/hr. Speed of the stream is 20% less than speed of boat. Then find time taken by boat to go 90 km downstream?
- A boat can cover 210 km in downstream in 10 hours and 160 km in upstream in 8 hours. Find the distance travelled by the boat in still water in 6 hours.
- Speed of a boat in still water is 11 kmph and speed of stream is 9 kmph. A man rows to a place at a distance of 40 km and come back to starting point. The ...
- A boat can cover 200 km in upstream in 10 hours and 220 km in downstream in 4 hours. Find the speed of the stream.
- A boat covers 84 km downstream in 4 hours. It takes the same time to cover 42 km downstream as to cover 30 km upstream. How much time (in hours) will the b...
Relevant for Exams:
