Question

Две специальные машине готовит трассу для лыжных гонок протяженность трассы 30 км машины одновременно начинают движение с противоположных концов трассы и едут навстречу друг другу одна со скоростью 130 м в минуту другая со скоростью 170 м в минуту через сколько Минут машине встретиться

Answer 1

30 км=30000 м
130+170=300 м/мин скорость сближения машин
30000:300=100 мин=1 ч 40 мин время, через которое машины встретятся

Answer 2

Problem Analysis

We are given two special machines that are preparing a ski track for a race. The length of the track is 30 km. The machines start simultaneously from opposite ends of the track and move towards each other. One machine has a speed of 130 m/min, and the other machine has a speed of 170 m/min. We need to determine how many minutes it will take for the machines to meet.

Solution

To find the time it takes for the machines to meet, we can use the formula: time = distance / relative speed. The relative speed is the sum of the speeds of the two machines.

Let's calculate the time it takes for the machines to meet.

Calculation

The distance between the machines is 30 km, which is equal to 30,000 meters.

The relative speed of the machines is 130 m/min + 170 m/min = 300 m/min.

Using the formula time = distance / relative speed, we can calculate the time it takes for the machines to meet:

time = 30,000 m / 300 m/min = 100 minutes.

Therefore, it will take 100 minutes for the machines to meet.

Answer

The two machines will meet after 100 minutes.