Find the speed of the boat downstream of the river and the speed of the boat upstream
| August 1, 2021 | education
Find the speed of the boat downstream of the river and the speed of the boat upstream if its own speed is 8 / km / h and the speed of the river is 1 1/2 km / h.
1 1/2 km / h is equal to 1.5 km / h.
In order to find the speed of the boat along the river, it is necessary to add the speed of the current to the boat’s own speed.
In this case, we get:
8 + 1.5 = 9.5 km / h.
In order to find the speed of the boat against the current of the river, it is necessary to subtract the speed of the river from its own speed.
In this case, we get:
8 – 1.5 = 6.5 km / h.
Answer: The speed of the boat downstream of the river is 9.5 km / h, the speed of the boat upstream of the river is 6.5 km / h.
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