Question

74,5 км катер проходит по течению реки за 5 часов. Найти скорость течения реки если собственая скорость катера 12,4км в час

Answer 1

74,5:5=14,9км/ч скорость катера по течению реки
14,9-12,4=2,5км/ч скорость течения реки

Answer 2

1)74.5:5=14.9 (км)-катер плывет за 1 час, по течению.
2)14,9-12,4=2,5(км/ч)-скорость течения реки.
Ответ: 2,5 км/ч

Answer 3

Problem Statement

A boat travels a distance of 74.5 km along a river in 5 hours. The boat's own speed is 12.4 km/h. We need to find the speed of the river's current.

Solution

To find the speed of the river's current, we can use the formula:

Speed of boat in still water = Speed of boat with current + Speed of current

Let's denote the speed of the river's current as x.

Given that the boat's own speed is 12.4 km/h and it travels a distance of 74.5 km in 5 hours, we can set up the following equation:

12.4 km/h = (74.5 km) / (5 hours)

Simplifying the equation, we find:

12.4 km/h = 14.9 km/h

Now, we can substitute the values into the formula:

14.9 km/h = 12.4 km/h + x

Solving for x, we find:

x = 14.9 km/h - 12.4 km/h

Therefore, the speed of the river's current is 2.5 km/h.

Answer

The speed of the river's current is 2.5 km/h.