The boat covered the distance in 3.5 hours from point A to point B, the speed of the boat was 5 km / h

| February 8, 2021 | education

The boat covered the distance in 3.5 hours from point A to point B, the speed of the boat was 5 km / h, the speed of the river flow was 2 km / h, what is the distance from point A to point B?

1. We calculate the speed of the boat if it was sailing in the direction of the water flow (down the river):

5 + 2 = 7 km / h.

2. Find her speed if she was sailing in the direction opposite to the river flow (up the river):

5 – 2 = 3 km / h.

3. We calculate the distance between points A and B, provided that point B is located downstream of the river:

3.5 x 7 = 24.5 kilometers.

4. We calculate the distance between points A and B, provided that point B is located upstream of the river:

3.5 x 3 = 10.5 kilometers.

Answer: the distance between points A and B is 10.5 kilometers, provided that point B is located upstream of the river, the distance between points A and B is 24.5 kilometers, provided that point B is located downstream of the river.



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