A boat goes downstream at the rate of 9 kmph and upstream at the rate of 6 kmph. Find the speed of current.
Speed of current = $$\frac{1}{2}$$ (downstream - upstream)
= $$\frac{1}{2} (9 - 6)$$
= $$\frac{3}{2} = 1.5$$ kmph
Create a FREE account and get: