Question

Решите задачу на сближение:Расстояние-1700км,скорость 1 машины 90км/ч,скорость2 машины-80км/ч,время-?,Вопрос:через которое время они встретяться?

Answer 1

90+80=170 км/ч общая скорость
1700/170=10 часов 
Ответ:через 10 часов

Answer 2

Problem Analysis

We are given the following information: - Distance: 1700 km - Speed of Car 1: 90 km/h - Speed of Car 2: 80 km/h

We need to find the time it takes for the two cars to meet.

Solution

To solve this problem, we can use the formula:

Time = Distance / Relative Speed

The relative speed is the difference between the speeds of the two cars.

Let's calculate the relative speed:

Relative Speed = Speed of Car 1 - Speed of Car 2

Relative Speed = 90 km/h - 80 km/h = 10 km/h

Now, we can calculate the time it takes for the two cars to meet:

Time = Distance / Relative Speed

Time = 1700 km / 10 km/h = 170 hours

Therefore, it will take 170 hours for the two cars to meet.

Answer

The two cars will meet after 170 hours.