A boat take thrice as much time to sail in the upstream of river as it would have taken to sail in the downstream.of the speed of water is 5 km/hr then the speed of boat in still water is
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The speed of water = 15km/h
Let the speed of the boat in still water = x km/h
Speed of boat downstream = (x + 15) km/h
Speed of boat upstream = (x - 15) km/h
If the distance is D
Time taken downstream = D/(x +15)
Time taken upstream = D/ (x - 15)
A boat take thrice as much time to sail in the upstream of river as it would have taken to sail in the downstream. Meaning;
D(x - 15) = 3D/(x + 15)
Giving x = 30
(See the solution attached)
The speed of boat in still water = 30 km/hr
.
Let the speed of the boat in still water = x km/h
Speed of boat downstream = (x + 15) km/h
Speed of boat upstream = (x - 15) km/h
If the distance is D
Time taken downstream = D/(x +15)
Time taken upstream = D/ (x - 15)
A boat take thrice as much time to sail in the upstream of river as it would have taken to sail in the downstream. Meaning;
D(x - 15) = 3D/(x + 15)
Giving x = 30
(See the solution attached)
The speed of boat in still water = 30 km/hr
.
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Answer:
Explanation:
The speed of water = 15km/h
Let the speed of the boat in still water = x km/h
Speed of boat downstream = (x + 15) km/h
Speed of boat upstream = (x - 15) km/h
If the distance is D
Time taken downstream = D/(x +15)
Time taken upstream = D/ (x - 15)
A boat take thrice as much time to sail in the upstream of river as it would have taken to sail in the downstream. Meaning;
D(x - 15) = 3D/(x + 15)
Giving x = 30
(See the solution attached)
The speed of boat in still water = 30 km/hr
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