aman can row his canoe at 10 km/hr in still water but he takes 4 hrs more to row upstream in comparison to downstream if the distance upstream or downstream is 30 km find the speed of stream
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Answer:
The speed of the stream is 5 km/hr.
Step-by-step explanation:
Let the time for upstream trip be Tu and for downstream trip be Td
As given, Tu - Td = 4
Now forming the equations based on the formula-
Time = Distance/Relative speed
Let B be in the speed of boat in still water and S be the speed of stream
( Equations given and solved in the attached picture)
We get a final quadratic equation as =
S2 + 15 S- 100 = 0
Solving this, we get S as 5 km/hr
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