Question

Из одного пункта в противоположных направлениях выезжают автобус и автомабиль.Скорость автобуса 45км/ч а автомобиля 55км/ч.Через какое время расстояние между ними будет равно 200км 300км 400км помогите пожалуста только с пояснениями

Answer 1

1) 45+55=100 (км/ч) - скорость удаления
2) 200:100=2 (ч) - через это время расстояние между ними будет 200км
3) 300:100=3 (ч) - через это время расстояние между ними будет 300км
4) 400:100=4 (ч) - через это время расстояние между ними будет 400км

Answer 2

Problem Analysis

We have an exercise where a bus and a car start from the same point in opposite directions. The bus has a speed of 45 km/h, and the car has a speed of 55 km/h. We need to determine how long it will take for the distance between them to be a certain value.

Solution

To solve this problem, we can use the formula: time = distance / relative speed. The relative speed is the sum of the speeds of the bus and the car.

Let's calculate the time it will take for the distance between them to be 200 km, 300 km, and 400 km.

Calculation

1. For a distance of 200 km: - Relative speed = 45 km/h + 55 km/h = 100 km/h - Time = 200 km / 100 km/h = 2 hours

2. For a distance of 300 km: - Relative speed = 45 km/h + 55 km/h = 100 km/h - Time = 300 km / 100 km/h = 3 hours

3. For a distance of 400 km: - Relative speed = 45 km/h + 55 km/h = 100 km/h - Time = 400 km / 100 km/h = 4 hours

Therefore, it will take 2 hours for the distance between them to be 200 km, 3 hours for it to be 300 km, and 4 hours for it to be 400 km.

Conclusion

In summary, the time it will take for the distance between the bus and the car to be 200 km is 2 hours, for it to be 300 km is 3 hours, and for it to be 400 km is 4 hours.