Question

От одной пристани одновременно в противоположных направлениях отплыли 2 катера. Через 3 часа расстояние между ними стало равно 168 км. Найди скорость второго катера, если известно, что скорость первого катера составляет 25 км/ч Тема "движение в противоположных направлениях" ПЖ СРОЧНО НУЖНО

Answer 1

25*3=75 км проплил первий катер
168-75=93 км проплил второй катер
93/3=31 км/ч скорость второго катера

Answer 2

Problem Analysis

We are given that two boats depart from a dock simultaneously in opposite directions. After 3 hours, the distance between them is 168 km. We need to find the speed of the second boat, given that the speed of the first boat is 25 km/h.

Solution

Let's assume the speed of the second boat is x km/h.

The distance covered by the first boat in 3 hours is 25 * 3 = 75 km.

The distance covered by the second boat in 3 hours is x * 3 = 3x km.

The total distance between the two boats after 3 hours is the sum of the distances covered by each boat:

75 km + 3x km = 168 km

To find the value of x, we can solve this equation:

3x + 75 = 168

Simplifying the equation:

3x = 168 - 75

3x = 93

x = 93 / 3

x = 31

Therefore, the speed of the second boat is 31 km/h.

Answer

The speed of the second boat is 31 km/h.