The speed of the boat against the stream of the river is 17 2/5 km / h and the boat’s own speed is 19
| April 4, 2021 | education
The speed of the boat against the stream of the river is 17 2/5 km / h and the boat’s own speed is 19 km / h. find the speed of the river and the speed with the current.
To determine the speed of the river, use the following formula:
V1 = V – V2,
Where:
V1 is the speed of the river flow;
V is the boat’s own speed;
V2 is the speed of the boat against the current of the river.
We get:
V1 = 19 – 17 2/5 = 18 5/5 – 17 2/5 = 1 3/5 km / h.
To find the speed of the boat downstream, add the severity of the river to the boat’s own speed.
19 + 1 3/5 = 20 3/5 km / h.
Answer: The speed of the current is 1 3/5 km / h; speed downstream of the river 20 3/5 km / h.
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