Question

Девочка и мальчик побежали с двух концов беговой дорожки одновременно навстречу друг другу и встретились через 30 сек. Длина беговой дорожки 300 м.скорость девочки 4 м/сек. Какова скорость мальчика?

Answer 1

Сначала 4 умножаем на 30 получается 120 ето будет то сколько пробежала девочка потом от 300 отнимаем 120 будет 180 потом 180 делим на 30 получается 6: ответ 6 м/сек.

Answer 2

Calculation of the Boy's Speed

To determine the speed of the boy, we can use the formula:

Speed = Distance / Time

In this case, the distance is the length of the running track, which is given as 300 meters. The time is the time it took for the girl and the boy to meet, which is given as 30 seconds.

Plugging these values into the formula, we get:

Speed = 300 meters / 30 seconds

Simplifying the equation, we find that the speed of the boy is:

Speed = 10 meters/second.

Therefore, the speed of the boy is 10 meters per second.

Please let me know if there is anything else I can help you with!