Question
A boat covered 168 km along the stream in 6 hours and 108 km against the stream in 6 hours. Find the speed of boat in still water.
Solution
Downstream speed = (168/6) = 28 km/h Upstream speed = (108/6) = 18 km/h Speed of boat in still water = (28 + 18) ÷ 2 = 23 km/h
More Boats and streams Questions
- Speed of a boat in still water to speed of boat in upstream is 10: 9. If the boat can travel 220 km in downstream in 8 hours, then find the time taken by t...
- A boat can travel 36 km downstream in 40 min. The ratio of the speed of the boat in still water to the speed of the stream is 5: 4. How much time will the ...
- A boat covers 42 km downstream in 3 hours and 30 km upstream in 5 hours. What is the speed of the boat in still water?
- A boat goes 8 km an hour in still water, but takes twice as much time in going the same distance against the current. The speed of the current (in km/hour)...
- A boat covers a certain distance against the stream in 9 hours 36 min and it covers the same distance along the stream in 6 hours. What is the ratio of the...
- A man can go on a motor boat with a speed of 15 km/hour in still water, he goes to a certain distance upstream and come back to the starting point in a riv...
- In still water, the speed ratio of boats A and B is 10:7. Boat A’s still-water speed is twice the stream speed. If A covers 180 km downstream in 6 hours, h...
- Ramu can row 12 km/hr. in still water. It takes him twice as long to row up as to row down. Find the rate of the stream.
- Calculate the speed of a boat in still water if it travels 176 km downstream in 11 hours and returns 144 km upstream in 18 hours.
- The downstream speed of a boat is 22 km/hr, and its upstream speed is 14 km/hr. Determine the time required for the boat to travel a distance of 162 km in ...
Relevant for Exams:
