The distance between the two villages along the river is 48 km. This distance the boat sails along the river in 2 hours

| September 1, 2021 | education

The distance between the two villages along the river is 48 km. This distance the boat sails along the river in 2 hours, and against the current in 3 hours. Find your own speed of the boat and the speed of the river.

The solution of the problem:

The speed of the boat along the river is:

48: 2 = 24 (km / h) – speed of the boat along the river.

The speed of the boat against the stream of the river is:

48: 3 = 16 (km / h) – speed of the boat against the stream of the river.

To find the speed of the river flow, it is necessary to subtract the speed of the boat against the river flow from the speed of the boat along the river and divide the resulting value by 2:

(24 – 16) / 2 = 8/2 = 4 (km / h) – the speed of the river.

24 – 4 = 20 (km / h) – own speed of the boat.

Answer: 20 km / h, 4 km / h.



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