Question

Из двух городов одновременно навстречу друг другу выехали 2 поезда.Скорость одного 64км\ч,а другого 72км\ч.Поезда встретились через 3 часа.Какое расстояние между городами?

Answer 1

1)64+72=136(км/ч)-скорость сближения.
2)136×3=408(км)-расстояние.
Ответ: расстояние между городами 408 км.

Answer 2

Problem Analysis

We are given that two trains start simultaneously from two cities and are moving towards each other. The speed of one train is 64 km/h, and the speed of the other train is 72 km/h. The trains meet after 3 hours. We need to find the distance between the two cities.

Solution

To find the distance between the two cities, we can use the formula:

Distance = Speed × Time

Let's calculate the distance traveled by each train and then find the total distance between the two cities.

1. Train 1: - Speed: 64 km/h - Time: 3 hours - Distance = 64 km/h × 3 hours = 192 km

2. Train 2: - Speed: 72 km/h - Time: 3 hours - Distance = 72 km/h × 3 hours = 216 km

To find the total distance between the two cities, we can add the distances traveled by each train:

Total Distance = Distance of Train 1 + Distance of Train 2 = 192 km + 216 km = 408 km

Therefore, the distance between the two cities is 408 km.

Answer

The distance between the two cities is 408 km.