Question

Из 2 городов одновременно на встречу 2 поезда скорость одного 64 км/ ч а другого 72 км/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) - S
Ответ: S=408 километров

Answer 2

Problem Analysis

We are given that two trains are traveling towards each other from two different cities. The speed of one train is 64 km/h, and the speed of the other train is 72 km/h. The trains meet each other 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 x Time

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

1. Distance traveled by the first train: - Speed of the first train = 64 km/h - Time taken = 3 hours - Distance = Speed x Time = 64 km/h x 3 hours = 192 km

2. Distance traveled by the second train: - Speed of the second train = 72 km/h - Time taken = 3 hours - Distance = Speed x Time = 72 km/h x 3 hours = 216 km

3. Total distance between the two cities: - Total distance = Distance traveled by the first train + Distance traveled by the second train = 192 km + 216 km = 408 km

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