Question

Из двух городов навстречу друг другу выехали две машины скорость первой 70 километров в час скорость второй 80 километров в час через сколько часов машина встретятся если расстояние между городами 150 километров

Answer 1

1)70+80=150(км/ч) скорость сближения
2)150:150=1(ч)
Ответ:через 1 час

Answer 2

Скорость первой машины:70 км/ч
Скорость второй машины:80км/ч
Расстояние:150 км
Время сближения:?
?1)70+80=150(км/ч) - скорость сближения
2)150:150=1(ч) - время сближения
Ответ: машины встретятся через час

Answer 3

Problem Analysis

We have two cars traveling towards each other from two different cities. The first car is traveling at a speed of 70 kilometers per hour, and the second car is traveling at a speed of 80 kilometers per hour. We need to determine how many hours it will take for the two cars to meet if the distance between the cities is 150 kilometers.

Solution

To find the time it takes for the two cars to meet, we can use the formula:

time = distance / relative speed

The relative speed is the sum of the speeds of the two cars. Let's calculate the time it takes for the two cars to meet.

Calculation

Given: - Speed of the first car = 70 kilometers per hour - Speed of the second car = 80 kilometers per hour - Distance between the cities = 150 kilometers

Relative speed = 70 km/h + 80 km/h = 150 km/h

Time = 150 km / 150 km/h = 1 hour

Answer

The two cars will meet in 1 hour.

Explanation

The two cars are traveling towards each other, so their relative speed is the sum of their individual speeds. In this case, the relative speed is 150 kilometers per hour. The time it takes for the two cars to meet is equal to the distance between the cities divided by the relative speed. Therefore, the two cars will meet in 1 hour.