Question

Из двух городов, расстояние между которыми 150 км, одновременно навстречу друг другу выехали два автомобиля. Скорость одного автомобиля 85 км/ч, а второго 35 км/ч. через сколько часов они встретятся?

Answer 1

1 приедет через 1 час 5 мин .
1)150:85=65 следовательно 1 час = 60 мин.
2 приедет через 4 часа .
150:35=4 часа .

Answer 2

Problem Analysis

We have two cars traveling towards each other from two different cities. The distance between the cities is 150 km. The first car is traveling at a speed of 85 km/h, and the second car is traveling at a speed of 35 km/h. We need to determine how many hours it will take for the two cars to meet.

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 since they are traveling towards each other.

Let's calculate the time it takes for the two cars to meet.

Calculation

The distance between the two cities is 150 km.

The speed of the first car is 85 km/h.

The speed of the second car is 35 km/h.

The relative speed of the two cars is the sum of their speeds: 85 km/h + 35 km/h = 120 km/h.

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

Time = Distance / Relative Speed

Time = 150 km / 120 km/h

Time = 1.25 hours

Therefore, it will take 1.25 hours for the two cars to meet.

Answer

The two cars will meet in 1.25 hours.