The speed of the river flow is 3 km / h, how much more is the speed of the boat along the river than its speed against the current.

univerkov | January 16, 2021 | education

Let the speed of the boat be x km / h, then the speed of the boat downstream is x + 3 km / h, the speed of the boat against the river is x-3 km / h.
Let’s calculate how much more the boat’s speed downstream of the river than the speed of the boat upstream of the river:
(x + 3) – (x-3) = x + 3-x + 3 = 6 km / h.
Answer: the speed along the river is more than the speed of the boat against the river by 6 km / h.

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