Question

Пешеход и всадник отправились одновременно навстречу друг другу из двух посёлков расстояние между которыми 12 км. Какое расстояние будет между ними через четверть часа, если скорость движения пешехода 8 км в час а скорость движения всадника в два раза больше

Answer 1

Ответ: 6 километров
1) 8 : 4= 2 км./ч.( скорость пешехода за четверть часа ).
2) 16 : 4= 4 км./ч. ( скорость всадника за четверть часа).
3) 4+2= 6 км. ( останется между ними через четверть часа).
На всякий случай:
1 час= 60 минут
60 : 4= 15 минут
Это четверть часа

Answer 2

1)8×2=16(км/ч)скорость всадника 2)16×0.25=4(км)длина пути всадника за 1/4ч 3)8×0.25=2(км)длина пути пешехода за 1/4ч 4)4+2=6(км)длина пути обоих 5)12-6=6(км)растояние между ними через 1/4ч ответ:6км

Answer 3

Problem Analysis

We are given that a pedestrian and a rider start simultaneously from two villages towards each other. The distance between the villages is 12 km. The pedestrian's speed is 8 km/h, and the rider's speed is twice that of the pedestrian. We need to find the distance between them after a quarter of an hour.

Solution

To find the distance between the pedestrian and the rider after a quarter of an hour, we need to calculate the distance each of them has traveled in that time.

Let's start by calculating the distance the pedestrian has traveled. We know that the pedestrian's speed is 8 km/h, and the time is a quarter of an hour (15 minutes). We can use the formula:

Distance = Speed × Time

Substituting the values, we get:

Distance pedestrian = 8 km/h × 0.25 h = 2 km.

Now let's calculate the distance the rider has traveled. We know that the rider's speed is twice that of the pedestrian, so the rider's speed is 16 km/h. Using the same formula as before, we get:

Distance rider = 16 km/h × 0.25 h = 4 km.

Since the pedestrian and the rider are moving towards each other, the distance between them after a quarter of an hour is the sum of the distances they have traveled:

Total distance = Distance pedestrian + Distance rider = 2 km + 4 km = 6 km.

Therefore, the distance between the pedestrian and the rider after a quarter of an hour is 6 km.

Answer

The distance between the pedestrian and the rider after a quarter of an hour will be 6 km.

References

- Source: