Question

Из двух городов одновременно навстречу друг другу вышли 2 грузовика.скорость одного из них - 65,4 км/ч, а скорость а скорость второго - на 10 ,8 км/ч меньше.найдите расстояние между городами, если грузовики встретились через 0,9 ч.

Answer 1

1)65,4-10,8=54,6(км/ч)-скорость второго грузовика
2)65,4+54,6=120(км/ч)-скорость сближения
3)120*0,9=108(км)-расстояние между городами
       Ответ:108 км.

Answer 2

1)65,4-10,8=54,6(км/ч)-скорость второго грузовика
2)65,4+54,6=120(км/ч)-скорость сближения

Answer 3

Problem Analysis

We are given that two trucks start simultaneously from two cities and meet each other after 0.9 hours. The speed of one truck is 65.4 km/h, while the speed of the other truck is 10.8 km/h less than the first truck. We need to find the distance between the two cities.

Solution

Let's denote the speed of the first truck as v1 and the speed of the second truck as v2. We are given that v1 = 65.4 km/h and v2 = v1 - 10.8 km/h.

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

Distance = Speed × Time

Since the two trucks meet each other after 0.9 hours, the time is 0.9 hours.

Let's substitute the values into the formula:

Distance = (v1 + v2) × Time

Distance = (65.4 km/h + (65.4 km/h - 10.8 km/h)) × 0.9 hours

Simplifying the equation:

Distance = (65.4 km/h + 54.6 km/h) × 0.9 hours

Distance = 120 km/h × 0.9 hours

Distance = 108 km

Therefore, the distance between the two cities is 108 kilometers.

Answer

The distance between the two cities is 108 kilometers.