The speed of the boat in still water is 16.7 km / h, and the speed of the river flow is 2.3 km / h.

| April 18, 2021 | education

The speed of the boat in still water is 16.7 km / h, and the speed of the river flow is 2.3 km / h. The boat walked 2 hours downstream, and then turned back and walked for another 3 hours. How many kilometers did the boat go?

1. Let’s calculate the speed of the boat along the river.

16.7 + 2.3 = 19 kilometers per hour.

2. Find out what distance he swam with the current, if it is known that he swam for 2 hours.

19 * 2 = 38 kilometers.

3. Let’s calculate the speed of the boat against the current.

16.7 – 2.3 = 14.4 kilometers per hour.

4. Find out what distance the boat sailed against the current, if it is known that it sailed for 3 hours.

14.4 * 3 = 43.2 kilometers.

5. Now let’s calculate how much the boat has sailed.

38 + 43.2 = 81.2 kilometers.

Answer: The distance that the boat sailed is 81.2 kilometers.



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