Question

Из двух городов навстречу друг другу выехали одновременно 2 поезда. Скорость одного 68 км/ч , скорость другого состовляет 3/4 скорости первого. Найти расстояние между городами если поезда встретятся через 1,3 часа. Пожалуйста решите !!!!!!! Срочно надо !!! ДАЮ 25 БАЛЛОВ!!!!

Answer 1

1) 68*3/4 = 51 (км/ч) - скорость второго поезда

2) (68+51)*1.3 = 154.7 (км)

Ответ. Расстояние между городами 154.7 км

Answer 2

Problem Analysis

We are given that two trains start from two cities simultaneously. The speed of one train is 68 km/h, while the speed of the other train is 3/4 of the speed of the first train. We need to find the distance between the cities if the trains meet after 1.3 hours.

Solution

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

The first train's speed is 68 km/h, so in 1.3 hours, it will cover a distance of 68 * 1.3 = 88.4 km.

The second train's speed is 3/4 of the first train's speed, which is (3/4) * 68 = 51 km/h. In 1.3 hours, it will cover a distance of 51 * 1.3 = 66.3 km.

Since the two trains are moving towards each other, the total distance covered by both trains will be equal to the distance between the cities.

Therefore, we can write the equation: d = 88.4 + 66.3

Now, let's calculate the distance between the cities.

Calculation

d = 88.4 + 66.3 d = 154.7 km

Answer

The distance between the two cities is 154.7 km.

Please note that the sources provided do not contain relevant information for this specific problem. The solution is derived using basic mathematical principles.