Question

Со станции А на станцию В выехал поезд со скоростью 75 км/ч. Когда он прошёл 150 км, то навстречу ему со станции В вышел другой поезд со скоростью 69 км/ч и шёл до встречи 4 часа. Чему равно расстояние между городами?

Answer 1

1) S=t×V
S=69×4=276- расстояние, которое прошёл второй поезд
2)276+150=426- расстояние между станциями
Ответ: 426 км

Answer 2

69*4=276+150=426 км расстояние между городами.

Answer 3

Problem Analysis

We are given the following information: - Train A travels from station A to station B at a speed of 75 km/h. - When Train A has traveled 150 km, Train B starts from station B and travels towards Train A at a speed of 69 km/h. - The two trains meet after 4 hours.

We need to find the distance between the two cities.

Solution

Let's assume the distance between the two cities is d km.

We can calculate the time it takes for Train A to travel 150 km using the formula:

time = distance / speed

For Train A: - Distance = 150 km - Speed = 75 km/h

Substituting the values, we get:

time for Train A = 150 km / 75 km/h = 2 hours

Since Train B starts from station B after Train A has traveled 150 km and the two trains meet after 4 hours, the time it takes for Train B to travel the remaining distance (d - 150) km is:

time for Train B = 4 hours - 2 hours = 2 hours

For Train B: - Distance = (d - 150) km - Speed = 69 km/h

Using the formula, we can calculate the distance (d - 150) km:

(d - 150) km = 69 km/h * 2 hours

Simplifying the equation, we get:

d - 150 = 138 km

Adding 150 to both sides of the equation, we find:

d = 138 km + 150 km = 288 km

Therefore, the distance between the two cities is 288 km.

Answer

The distance between the two cities is 288 km.