Question

Протяженность трассы 30 км, машины одновременно начинают движение с противоположных концов трассы и едут на встречу друг другу, одна со скоростью 130 м/мин, другая со скоростью 170 м/мин, через сколько минут машины встретятся?

Answer 1

130+170=300 
300:30=10

Answer 2

130+170=300
300:30=10
10минут:) вроде так

Answer 3

Problem Analysis

We are given that two cars start simultaneously from opposite ends of a 30 km road and travel towards each other. The first car has a speed of 130 m/min, while the second car has a speed of 170 m/min. We need to determine how many minutes it will take for the cars to meet.

Solution

To solve this problem, we can use the formula:

Time = Distance / Speed

Let's calculate the time it takes for each car to reach the meeting point.

The first car travels at a speed of 130 m/min. Since the total distance is 30 km (or 30,000 m), the time it takes for the first car to reach the meeting point is:

Time for first car = Distance / Speed = 30,000 m / 130 m/min

Similarly, the second car travels at a speed of 170 m/min. The time it takes for the second car to reach the meeting point is:

Time for second car = Distance / Speed = 30,000 m / 170 m/min

To find the total time it takes for the cars to meet, we can add the times for both cars:

Total time = Time for first car + Time for second car

Let's calculate the values:

Time for first car = 30,000 m / 130 m/min = 230.77 min

Time for second car = 30,000 m / 170 m/min = 176.47 min

Total time = 230.77 min + 176.47 min = 407.24 min

Therefore, the cars will meet after approximately 407.24 minutes.