Question

Представь себе:из двух муравейников одновременно навстречу друг другу выбежали два муравья.Один бежал со скоростью 1 см в 1 сек,а другой со скоростью 3 см в 1 сек.Через какое время муравьи встретятся,если расстояние между муравейниками 80 см?

Answer 1

1)1+3=4см/с-скорость приближения
2)80:4=20секунд
Ответ:Через 20секунд

Answer 2

Problem Analysis

We are given two ants running towards each other from two different ant hills. The first ant runs at a speed of 1 cm/s, while the second ant runs at a speed of 3 cm/s. We need to determine how long it will take for the ants to meet if the distance between the ant hills is 80 cm.

Solution

To solve this problem, we can use the concept of relative speed. The relative speed is the difference between the speeds of the two ants. In this case, the relative speed is 3 cm/s - 1 cm/s = 2 cm/s.

We can calculate the time it takes for the ants to meet by dividing the distance between the ant hills by the relative speed.

Let's calculate the time it takes for the ants to meet:

Distance between the ant hills: 80 cm

Relative speed: 2 cm/s

Time taken to meet: 80 cm / 2 cm/s = 40 s

Therefore, the ants will meet after 40 seconds.

Answer

The ants will meet after 40 seconds.