The speed of the river is 3 km / h. How much more is the speed of the boat along the river than the speed against the current?

univerkov | July 5, 2021 | education

The solution of the problem:

Let the boat’s own speed be x km / h.

Then the speed of the boat along the river is – x + 3 km / h.

The speed of the boat against the current of the river – x – 3 km / h.

Subtract from the speed of the boat along the river the speed of the boat against the current of the river and find the answer:

(x + 3) – (x – 3) = x + 3 – x + 3 = 6 (km / h) – the speed of the boat along the river is greater than the speed of the boat against the current of the river.

Answer: The speed of the boat downstream of the river is 6 km / h faster than the speed of the boat upstream.

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