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Question 104
A boatman rows 1 km in 5 minutes, along the stream and 6 km in I hour against the stream. The speed of the stream is
Solution
let's say velocity of stream is $$v_{s}$$ and velocity of boat is$$v_{b}$$
so along the stream $$v_{s}$$ + $$v_{b}$$ = $$\frac{1 km.}{\frac{5}{60} hr}$$
and opposite to river $$v_{s}$$ - $$v_{b}$$ = $$\frac{6 km.}{ 1 hr}$$
soving above eq. we get $$v_{s}$$ = 3kmph
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