The speed of the boat is 22.5 km / h downstream and 18.5 km / h upstream. What is the boat’s own speed?
| August 11, 2021 | education
To solve the problem, we first find the difference between the speed of the boat along the river and against the river.
We get:
22.5 – 18.5 = 4 km / h (twice the speed of the river).
We find the speed of the river.
Divide the resulting speed value by 2.
4/2 = 2 km / h (river speed).
Find the boat’s own speed.
To do this, we subtract the current speed from the speed of the boat along the river.
22.5 – 2 = 20.5 km / h.
We check the solution.
18.5 + 2 = 20.5 km / h.
Answer:
The boat’s own speed is 20.5 km / h.
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