Question

Из одной деревни одновременно в противоположных направлениях вышли два пешехода со скоростью 4км/ч и 5км/ч.Какое расстояние будет между ними,когда первый пешеход пройдет 12 км? РЕШИТЕ ДАМ 10 БАЛЛОВ)

Answer 1

1) 12/4 = 3ч - шли пешеходы
2) 5*3 = 15 км - прошёл 2 пешеход
3) 15+12 = 27км - расстояние между пешеходами.
Ответ: 27 км

Answer 2

Calculation of the Distance between Two Pedestrians

To calculate the distance between two pedestrians who start walking simultaneously in opposite directions, we can use the formula:

Distance = Speed x Time

Let's calculate the distance between the two pedestrians when the first pedestrian has walked 12 km.

The first pedestrian has a speed of 4 km/h, so we can calculate the time taken by the first pedestrian to cover 12 km using the formula:

Time = Distance / Speed

Substituting the values, we get:

Time = 12 km / 4 km/h = 3 hours

Now, let's calculate the distance covered by the second pedestrian in 3 hours. The second pedestrian has a speed of 5 km/h, so the distance covered by the second pedestrian is:

Distance = Speed x Time = 5 km/h x 3 hours = 15 km

Therefore, when the first pedestrian has walked 12 km, the distance between the two pedestrians will be 15 km.