Question

С противоположных концов катка длиной 450 метров одновременно побежали навстречу друг другу два мальчика через сколько секунд они встретятся если Скорость одного мальчика 9 минут в секунду а другого 6 метров секунду

Answer 1

1)9+6=15(м/с) - скорость сближения
2)450÷15=30(сек)
Ответ: они встретятся через 30 секунд

Answer 2

Problem Analysis

Two boys are running towards each other from opposite ends of a 450-meter long rink. The speed of one boy is 9 meters per second, and the speed of the other boy is 6 meters per second. We need to calculate how many seconds it will take for them to meet.

Solution

To solve this problem, we can use the formula: time = distance / speed. We will calculate the time it takes for each boy to reach the center of the rink and then add those times together to find the total time it takes for them to meet.

Let's calculate the time it takes for the first boy to reach the center of the rink: - Distance traveled by the first boy = 450 meters / 2 = 225 meters - Speed of the first boy = 9 meters per second - Time taken by the first boy = 225 meters / 9 meters per second = 25 seconds

Now, let's calculate the time it takes for the second boy to reach the center of the rink: - Distance traveled by the second boy = 450 meters / 2 = 225 meters - Speed of the second boy = 6 meters per second - Time taken by the second boy = 225 meters / 6 meters per second = 37.5 seconds

Finally, let's add the times together to find the total time it takes for them to meet: - Total time = 25 seconds + 37.5 seconds = 62.5 seconds

Therefore, the two boys will meet after approximately 62.5 seconds.

Answer

The two boys will meet after approximately 62.5 seconds.