Question

Из двух городов, расстояние между которых 846 км вышли одновременно навстречу друг другу два поезда один шёл со средней скоростью 65 км/ч второй 60 км/ч какое расстояние будет между поездами через 3 часа? Мне решение и краткую запись плиз

Answer 1

(65+60)x3=375км - проехали вместе

846-375=471км - ответ

Answer 2

Условие: 

S-846км

V1-65км/ч

V2-60км/ч

Sчерез 3ч-?

1)65+60=125км/ч-скорость сближения.

2)125*3=375км-проедут вместе за 3 часа.

3)846-375=471км-будет между ними через 3 часа.

Answer 3

Problem Analysis

We have two trains traveling towards each other from two cities. The distance between the cities is 846 km. The first train is traveling at an average speed of 65 km/h, and the second train is traveling at an average speed of 60 km/h. We need to find the distance between the trains after 3 hours.

Solution

To find the distance between the trains after 3 hours, we need to calculate the total distance covered by both trains in 3 hours and subtract it from the initial distance between the cities.

Let's calculate the distance covered by each train in 3 hours:

- The first train is traveling at a speed of 65 km/h. So, in 3 hours, it will cover a distance of 65 km/h * 3 h = 195 km. - The second train is traveling at a speed of 60 km/h. So, in 3 hours, it will cover a distance of 60 km/h * 3 h = 180 km.

Now, let's calculate the distance between the trains after 3 hours:

- Initial distance between the cities: 846 km - Distance covered by the first train: 195 km - Distance covered by the second train: 180 km

Distance between the trains after 3 hours = Initial distance - Distance covered by the first train - Distance covered by the second train

Distance between the trains after 3 hours = 846 km - 195 km - 180 km = 471 km

Therefore, the distance between the trains after 3 hours will be 471 km.

Answer

The distance between the trains after 3 hours will be 471 km.