Question

Из двух посёлков, расстояние между которыми равно 3 км, одновременно навстречу друг другу вышли два пешехода. Один из них двигался со скоростью 5 км в час, а второй 4 км в час. Какое расстояние будет между пешеходами через два часа после начала движения?

Answer 1

Первый прошел: 5км/ч*2часа=10км
второй прошел: 4км/ч*2часа=8км
т.е. если изначально расстояние было 3км., то потом они разошлись в разные стороны и теперь это расстояние равно: 10км+8км-3км=15км
Ответ через 2 часа расстояние будет 15км.

Answer 2

Problem Analysis

We have two pedestrians walking towards each other from two villages that are 3 km apart. One pedestrian is walking at a speed of 5 km/h, while the other is walking at a speed of 4 km/h. We need to find the distance between them after two hours.

Solution

To find the distance between the pedestrians after two hours, we need to calculate the total distance covered by both pedestrians and subtract it from the initial distance between the villages.

Let's calculate the distance covered by each pedestrian after two hours:

- The first pedestrian is walking at a speed of 5 km/h. In two hours, they will cover a distance of 5 km/h * 2 h = 10 km. - The second pedestrian is walking at a speed of 4 km/h. In two hours, they will cover a distance of 4 km/h * 2 h = 8 km.

Now, let's calculate the distance between the pedestrians after two hours:

- The initial distance between the villages is 3 km. - The first pedestrian has covered a distance of 10 km. - The second pedestrian has covered a distance of 8 km.

To find the distance between the pedestrians, we subtract the sum of the distances covered by both pedestrians from the initial distance between the villages:

Distance between pedestrians = Initial distance - (Distance covered by pedestrian 1 + Distance covered by pedestrian 2) Distance between pedestrians = 3 km - (10 km + 8 km) Distance between pedestrians = 3 km - 18 km Distance between pedestrians = -15 km

The distance between the pedestrians after two hours is -15 km.

Conclusion

After two hours of walking, the distance between the pedestrians will be -15 km. However, it is important to note that a negative distance does not make sense in this context. It is likely that there was an error in the given information or calculation. Please double-check the values provided and ensure that the distances and speeds are accurate.