Question

Два поезда вышли из двух городов одновременно навстречу друг другу.Один поезд шёл со скоростью 75км/ч. С какой скоростью шёл второй поезд если расстояние между городами 556 км, а встретились поезда через 4 часа?

Answer 1

1)556:4=139(км/ч)-скорость сближения
2)139-75=64(км/ч)-скорость второго поезда

Answer 2

Problem Analysis

We have two trains traveling towards each other from two different cities. The first train is traveling at a speed of 75 km/h. We need to determine the speed of the second train if the distance between the cities is 556 km and the trains meet after 4 hours.

Solution

To find the speed of the second train, we can use the formula:

Speed = Distance / Time

Let's calculate the speed of the second train using this formula.

Calculation

Given: - Speed of the first train = 75 km/h - Distance between the cities = 556 km - Time taken for the trains to meet = 4 hours

Using the formula, we can calculate the speed of the second train:

Speed of the second train = Distance / Time

Speed of the second train = 556 km / 4 hours

Speed of the second train = 139 km/h

Therefore, the second train was traveling at a speed of 139 km/h.

Conclusion

The second train was traveling at a speed of 139 km/h.