Find the speed of the boat downstream of the river and upstream if. own speed of the boat is 12 km / h
| March 13, 2021 | education
Find the speed of the boat downstream of the river and upstream if. own speed of the boat is 12 km / h and the speed of the river flow is 1 1-5. km / h
Since when the boat is moving with the current, the river helps the boat to move, in order to calculate the speed of the boat, it is necessary to add its own speed to the speed of the river.
12 + 1 1/5 = 13 1/5 km / h.
When moving against the current, the river, accordingly, interferes and therefore, to determine the speed of the boat, it is necessary to subtract the speed of the current from the boat’s own speed.
12 – 1 1/5 = 10 4/5 km / h.
Answer: The speed of movement with the stream is 13 1/5 km / h, the speed of movement against the stream is 10 4/5 km / h.
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