Question

В 12 ч из двух соседних сёл вышли два агронома и пошли навстречу друг другу дороге длиной 6 км. Через 40 мин они встретились. Скорость движения одного агронома 80 м/мин. С какой скоростью шёл другой агроном?

Answer 1

80*40=3200м(3км 200м)прошёл 1 за 40 мин
6000-3200=2800м (2км800м) прошёл 2 за 40 мин
2800/40=70м/мин скорость 2 агронома

Answer 2

Problem Analysis

Two agronomists from neighboring villages started walking towards each other on a road that is 6 km long. They met after 40 minutes. We need to determine the speed at which the other agronomist was walking.

Solution

To find the speed at which the other agronomist was walking, we can use the formula:

Speed = Distance / Time

Let's calculate the speed of the agronomist who was walking at a speed of 80 m/min.

The distance covered by the agronomist who was walking at a speed of 80 m/min can be calculated using the formula:

Distance = Speed × Time

Given that the time taken to meet was 40 minutes, the distance covered by the agronomist who was walking at a speed of 80 m/min is:

Distance = 80 m/min × 40 min = 3200 meters

Since the total distance between the two agronomists is 6 km (6000 meters), we can find the distance covered by the other agronomist by subtracting the distance covered by the agronomist who was walking at a speed of 80 m/min from the total distance:

Distance of the other agronomist = Total distance - Distance covered by the agronomist at 80 m/min

Distance of the other agronomist = 6000 meters - 3200 meters = 2800 meters

Now, we can calculate the speed of the other agronomist using the formula:

Speed = Distance / Time

Speed = 2800 meters / 40 minutes

Converting minutes to hours (1 hour = 60 minutes):

Speed = 2800 meters / (40 minutes / 60 minutes/hour) = 2800 meters / (2/3 hours) = 4200 meters/hour

Therefore, the other agronomist was walking at a speed of 4200 meters/hour.

Answer

The other agronomist was walking at a speed of 4200 meters/hour.