Problems Involving Boat Moving Upstream
Problems Involving Boat Moving Upstream
In these type of situations, while calculating upstream speed we subtract the speed of river from the speed of boat because the river is pushing the boat downwards even when the boat is moving upwards. This means that the speed of the river is decreasing the speed of the boat.
Let the speed of a boat ( or a body) in still water be x km/h and that of stream be y km/h, then
Illustration: A boat goes 8 km in 1 h in still water. it takes twice the time in covering the same distance against the current. Find the speed of the current.
A. 5 Km/h B. 6 Km/h C. 4 Km/h D. None of these
Answer: C
Solution: Speed of boat instill water = 8 km/h
As it takes twice the time in covering the same distance against the current
Speed against the current
A boat goes 12 km in 1 h in still water. it takes thrice time in covering the same distance against the current. Find the speed of the current. | |||
| Right Option : A | |||
| View Explanation | |||
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