Question

2)из посёлка вышли одновременно в противоположных направлениях два пешехода. средняя скорость одново пешехода 5км/ч,другого-4км/ч.через сколько часов расстояние между ними будет 27км/ч?

Answer 1

1)5+4=9(км/ч) скорость удаления
2)27/9 =3(ч) время
Ответ: через 3 часа расстояние между ними будет 27 км

Answer 2

Problem Analysis

We have two pedestrians who start walking simultaneously in opposite directions. The average speed of one pedestrian is 5 km/h, while the average speed of the other pedestrian is 4 km/h. We need to determine how many hours it will take for the distance between them to be 27 km.

Solution

To solve this problem, we can use the formula: time = distance / speed.

Let's calculate the time it takes for each pedestrian to cover a distance of 27 km.

For the first pedestrian with a speed of 5 km/h: - Time taken = 27 km / 5 km/h = 5.4 hours

For the second pedestrian with a speed of 4 km/h: - Time taken = 27 km / 4 km/h = 6.75 hours

Since they are walking in opposite directions, the total time taken will be the sum of the individual times.

Total time taken = 5.4 hours + 6.75 hours = 12.15 hours

Therefore, it will take approximately 12.15 hours for the distance between the two pedestrians to be 27 km.

Answer

It will take approximately 12.15 hours for the distance between the two pedestrians to be 27 km.