Question

Ребят, помогите задачу решить, в дробях не разбираюсь. Два одноклассника на большой перемене бегут в столовую из разных концов коридора на встречу друг другу. Скорость первого равна 2/9 метров в секунду, а скорость второго равна 3/4 метра в секунду. Какое расстояние они пробегут до встречи у входа в столовую через 36 секунд?

Answer 1

Ответ: 35 м.

Пошаговое объяснение:

1) 2/9 + 3/4 = 8/36 + 27/36 = 35/36 (м/с) - скорость сближения;

2) 35/36 · 36 = 35 (м) - пробегут мальчики.

Answer 2

Problem Analysis

We have two classmates running towards each other from opposite ends of a corridor. The first classmate has a speed of 2/9 meters per second, while the second classmate has a speed of 3/4 meters per second. We need to find the distance they will cover before meeting at the entrance to the cafeteria in 36 seconds.

Solution

To find the distance covered by each classmate, we can use the formula:

Distance = Speed × Time

Let's calculate the distance covered by each classmate separately.

For the first classmate: - Speed = 2/9 meters per second - Time = 36 seconds

Distance covered by the first classmate = (2/9) × 36

For the second classmate: - Speed = 3/4 meters per second - Time = 36 seconds

Distance covered by the second classmate = (3/4) × 36

To find the total distance covered by both classmates, we need to add the distances covered by each of them.

Total distance covered = Distance covered by the first classmate + Distance covered by the second classmate

Let's calculate the distances and find the total distance covered.

Calculation

Distance covered by the first classmate: - Speed = 2/9 meters per second - Time = 36 seconds

Distance covered by the first classmate = (2/9) × 36 = 8 meters

Distance covered by the second classmate: - Speed = 3/4 meters per second - Time = 36 seconds

Distance covered by the second classmate = (3/4) × 36 = 27 meters

Total distance covered: Total distance covered = 8 meters + 27 meters = 35 meters

Therefore, the two classmates will cover a distance of 35 meters before meeting at the entrance to the cafeteria in 36 seconds.

Answer

The two classmates will cover a distance of 35 meters before meeting at the entrance to the cafeteria in 36 seconds.