A boat covers a distance of 30 km downstream in 2 hour while it takes 6 hour to cover the same distance upstream. What is the speed of the boat in km/hr
Solution:Option(C) is correct
Let $b$ and $s$ be the speed of boat and stream respectively.
As per the given conditions:
From eq (i) and (ii):
$s = 5$ and $b$ = 10 km/hr
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