The speed of the boat when moving along the river is 15 km / h, the speed of the river is 4 km / h
| August 7, 2021 | education
The speed of the boat when moving along the river is 15 km / h, the speed of the river is 4 km / h. Find the speed of the boat when driving upstream of the river.
In the event that the boat is moving along the river, the speed of the current is added to its own speed.
Therefore, you first need to determine the boat’s own speed.
To do this, we subtract the speed of the river from the speed of the boat.
We get:
15 – 4 = 11 km / h.
We find the speed of the boat against the stream of the river.
To do this, subtract the speed of the river from the boat’s own speed.
We get:
11 – 4 = 7 km / h.
Answer:
The speed of the boat against the current will be 7 km / h.
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