Question

Из двух городов навстречу друг друга выехали два поезда. Скорость одного 70 км/ч, а другого - 72 км/ч. Встретились поезда через 2 ч. Найди расстояние между городами.

Answer 1

1)70+72=142(км/ч)v сближения

2)142*2=284(км)

Ответ:284 км было между городами!

Легкая задача:)

Answer 2

найдем скорость сближения 72+70=142

затем по формуле расстояние: 142*2=284

Answer 3

Problem Analysis

We have two trains traveling towards each other at different speeds. The speed of one train is 70 km/h, and the speed of the other train is 72 km/h. The trains meet after 2 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 using this formula.

Train 1's speed = 70 km/h Train 2's speed = 72 km/h Time = 2 hours

Distance covered by Train 1 = 70 km/h x 2 hours = 140 km Distance covered by Train 2 = 72 km/h x 2 hours = 144 km

Since the trains are traveling towards each other, the total distance between the two cities is the sum of the distances covered by each train.

Total distance = Distance covered by Train 1 + Distance covered by Train 2

Total distance = 140 km + 144 km = 284 km

Therefore, the distance between the two cities is 284 km.

Answer

The distance between the two cities is 284 km.